Questions and answers by

Jett

Questions (471)

You should always wear your seatbelt just in case the car comes to an abrupt stop. The seatbelt will hold you in place so that
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Describe the real-world examples of Newton's third law that were identified in “Applications of Newton's Laws.”
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Which statement best summarizes the central idea of “Applications of Newton’s Laws”?Newton’s laws can explain the forces
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2. 81 views
When swimmers push against the wall of a pool with their feet, they are pushed away from the wall. Which of Newton's laws
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Which three things are related according to Newton's second law?force, mass, and acceleration force, matter, and acceleration
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Which of these is another name for Newton's first law?the law of action-reaction the law of force and acceleration the law of
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Alice kicks a 0.25 kg soccer ball with 0.5 N of force. What force does the ball exert on Alice’s foot as she kicks it?N
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a push or pull is a what
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the measure of the amount of substance in a sample is a what
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statement that force is equal to mass times acceleration is a what
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objects motion being constant unless acted on by an unbalanced force is a what
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If Siobhan hits a 0.25 kg volleyball with 0.5 N of force, what is the acceleration of the ball?m/s2
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What force would be required to accelerate a 1,100 kg car to 0.5 m/s2?N
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Newton’s first law of motion states that an object at rest stays at rest, and an object in motion stays in motion, unless
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Which graph shows a negative acceleration?A graph with horizontal axis time (seconds) and vertical axis position (meters). A
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2. 70 views
The graph depicts the velocity and times of Elan and Anna during a race.A graph with horizontal axis time (seconds) and vertical
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Which equation can be used to solve for acceleration?
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Maia says that both lines on this position vs time graph show acceleration. Is she correct? Why or why not?
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What is the acceleration of the car at segment C?30 m/s2 –30 m/s2 40 m/s2 –40 m/s2
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What is the initial velocity of the object represented by the graph?m/s
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The graph shows the motion of a car. Which segment shows that the car is slowing down?A B C D
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The graph shows the motion of a car. Which segments show that the car is accelerating? Select three options.A B C D E
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A car traveling at a speed of 24 m/s comes to a stop at a red light.How much time will it take for the car to stop if its
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A helicopter’s speed increases from 30 m/s to 40 m/s in 5 seconds.What is the acceleration of this helicopter? m/s2
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Study the image of the roller coaster, then answer the questions. Note that the arrows indicate the direction of the movement of
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A merry-go-round moves in a circle at a constant speed. Is the merry-go-round accelerating? Explain your answer.
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Which scenario involves acceleration?a motorcycle at constant speed on a highway a recreational vehicle parked in a campground a
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2. 37 views
Which graph shows acceleration?A graph of position (meters) versus time (seconds) has a straight line running from 0 seconds 0
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2. 41 views
A graph titled velocity versus time has horizontal axis time (seconds) and vertical axis velocity (meters per second). A line
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2. 90 views
Use the graph to determine acceleration and velocity.Which segments show acceleration? What is the velocity of segment B?
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2. 38 views
Complete the passage to describe velocity vs time graphs.A velocity vs time graph is a graph that shows the relationship between
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2. 48 views
A cyclist going downhill is accelerating at 1.2 m/s2. If the final velocity of the cyclist is 16 m/s after 10 seconds, what is
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2. 60 views
An airplane traveling 245 m/s east experienced turbulence, so the pilot decided to slow down to 230 m/s. It took the pilot 7
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2. 45 views
Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to 45
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2. 80 views
Which statement correctly describes the differences between positive and negative acceleration?Positive acceleration describes a
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An airplane turning from south to west at constant speed is accelerating due to a change in. A biker going 7 m/s west after
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2. 36 views
The graph is the path Beth took on a walk.A graph with horizontal axis time (seconds) and vertical axis position in (meters).
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2. 58 views
A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one complete
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2. 63 views
2 seconds.m/s What is the average speed over the entire trip? m/s
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2. 35 views
Based on the graph, describe what is happening between 4 and 6 seconds.The object is moving away from the start at a constant
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2. 54 views
A graph titled Position versus time for 3 runners with horizontal axis time (seconds) and vertical axis position (meters). A
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Which runner had the fastest speed in the race?Which runner had the slowest speed in the race? Which runner had a head start?
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The starting position of this object ism. The object is traveling at a velocity of m/s.
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The object represented by this graph is movingaway from the origin at a constant velocity. away from the origin at a decreasing
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Which statements describe the motion of the object represented by the graph? Select three options.The object is moving away from
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2. 63 views
Ben walks 500 meters from his house to the corner store. He then walks back toward his house but stops to talk to a neighbor
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A downhill skier was able to move 560 meters in 25 seconds. What is the skier’s average speed? (Round your answer to the
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2. 57 views
Which statements best describe the motion of Car A and Car B? Check all that apply.Car A and Car B are both moving toward the
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2. 81 views
A graph titled Position versus time for 2 runners with horizontal axis time (seconds) and vertical axis position (meters). An
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2. 74 views
Calculate the slope of the line on the graph using the formula:m = m = v subscript 2 - v subscript 1 over x subscript 2 minus x
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Identify which variable is plotted on each axis of a position vs time graph.Column A represents the variable to be plotted on
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Which represent correct variations of the formula for speed? Check all that apply.t = s = t = s = dt d = st d =
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Mikael runs with a speed of 3 m/s for 45 seconds. How far does Mikael run?15 m 30 m 90 m 135 m
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Shelley gives her little sister a 5-meter head start in a bike race. The race ends 15 meters east from where Shelley started. If
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An Olympic runner completes the 200-meter sprint in 23 seconds. What is the runner’s average speed? (Round your answer to the
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2. 74 views
How is velocity different from speed?Velocity is based on distance. Velocity includes direction. Velocity can be an average or
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2. 54 views
Manny walked a total of 3 miles. The reference point used to calculate the total distance that he walked was the same as the
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Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a single
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An object starts at position 12 on a horizontal line with a reference point of 0. What is the position of the object if it moves
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A linear track begins at 0 meters and has a total distance of 100 meters to the finish line. Juliet starts at the 10-meter mark
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2. 71 views
Two cars started at the same position and were driven through a city using different streets. The red car traveled north 2
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Nancy and Hiyang are training for a race. They entered some of their training notes in a chart.A 3-column table with 5 rows. The
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2. 46 views
Recall the previous question and the scenario with Zamir and Talia finding their way through a maze.Why is their displacement
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Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m
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2. 72 views
Zamir and Talia raced through a maze. Zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m
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2. 41 views
How are all paths that have a displacement of zero similar?
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Assume each tick mark represents 1 cm.Calculate the total displacement if a toy car starts at 0, moves 5 cm to the left, then 8
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Assume each tick mark represents 1 cm.Calculate the total displacement from 0 if an object moves 3 cm to the left, then 7 cm to
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2. 50 views
Some life forms move so slowly that their movement cannot be detected by normal observation. The best way to determine any
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What is the purpose of a reference point?to provide a standard system of measurement to establish a point from which to measure
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Which statements describe a situation with a displacement of zero? Check all that apply.traveling south for 30 miles, then
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There are several different models that represent compounds. One type of model is shown.3 C's connected in a line by 2 black
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Which condition must be met in order for an equation to be balanced?The elements in the reactants are the same as the elements
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2. 48 views
What does the octet rule state that explains why atoms bond?An atom bonds to have eight valence electrons to become stable. An
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2. 99 views
Which of these is a banking activity of the Fed?printing money regulating securities markets storing money for banks funding
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2. 54 views
If the domino effect occurs as a result of changes in the money supply, what will most likely happen as an immediate result of
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2. 76 views
Therate is the interest rate banks charge each other for borrowing or storing money.
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The Fed uses open market operations by buying and selling. The rate at which banks lend money and charge one another for storing
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2. 57 views
Over the last several months, there has been a rapid increase in the number of loans that banks have provided for mortgages and
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Choose the best word or phrase from each drop-down menu.The Fed uses open market operations by buying and selling . The rate at
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2. 63 views
Choose the best word or phrase from each drop-down menu.The Federal Reserve is the within the United States. The Federal
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2. 112 views
Read the excerpt from "Lise Marie de Baissac."In Normandy, Baissac pretended to be a refugee from Paris living in the house of a
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What is the controlling idea of "Lise Marie de Baissac”?Baissac was a spy who assumed secret identities, parachuted into
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2. 80 views
Read the excerpt from "Lise Marie de Baissac."After eleven months, the Gestapo became suspicious. Remaining cool under the
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Read the excerpt from "Dwaina Brooks.”Dwaina tore into the house that night after school and found her mother, Gail. As usual,
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Read the passage from "The Tell-Tale Heart.”It is impossible to say how first the idea entered my brain; but once conceived,
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2. 51 views
Karishma is reading "The Tell-Tale Heart." She reads an excerpt, looks for clues, and makes a prediction about what happens
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Read the passage from "The Tell-Tale Heart.”And every night, about midnight, I turned the latch of his door and opened it—oh
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Read the excerpt from "Wherefore Art Thou Romeo?”"Minor detail,” Shondra said. "You just have to say it like you mean it.
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Which statement best expresses the theme of "Wherefore Art Thou Romeo?”A friend’s genuine help can actually cause one pain.
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Read the excerpt from "It's Only Fair.”Maritza rolled her eyes. "That’s why we should do our report on Irene Morgan,” she
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Read the excerpt from the conclusion of the letter to the editor.We need to urge our city planners to say goodbye to the urban
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Read the excerpt from "The Most Dangerous Game."Again Rainsford lifted the heavy knocker, and let it fall. The door opened then,
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2. 82 views
Read the excerpt.After a strenuous climb, the hikers decided to make camp before reaching the summit; night was approaching
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Which is found in "On the Bus with Rosa Parks" but not in My Story?the idea that segregation was unfair details about what the
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Read the excerpt from Martin Luther King Jr.’s "I Have a Dream” speech.But one hundred years later, the Negro still is not
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Read the sentence.The planet Jupiter, named for the king of the Roman gods, has rings composed of dust particles ejected during
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Read the sentence.Roland, the artist, brilliantly captured the fading pastel light on his canvas, and he preserved the sunset
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How is the tone in My Story different from the tone in "On the Bus with Rosa Parks"?The memoir has a shy tone; the poem has a
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2. 79 views
Which line from "Lather and Nothing Else." best reveals internal conflict?To cover my nervousness, I went on honing the razor.
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2. 41 views