The nonfiction genre that involves true accounts of only past periods or events is historical.
Which nonfiction genre involves true accounts of only past periods or events?(1 point)
Responses
historical
journalism
journalism
self-help
self-help
how-to
11 answers
Which nonfiction genre is defined as a story of real peoples’ lives told by other people?(1 point)
Responses
autobiography
autobiography
biography
biography
fiction
fiction
self-help
Responses
autobiography
autobiography
biography
biography
fiction
fiction
self-help
The nonfiction genre defined as a story of real peoples’ lives told by other people is biography.
A student is demonstrating acceleration by throwing two balls. She throws both balls using the same amount of force in the same direction. The first ball she throws has a mass of 0.25 kg and the second ball has a mass of 0.5 kg.
Explain what will happen to their acceleration and why.
(1 point)
Responses
The balls have equal acceleration because they are being thrown in the same direction.
The balls have equal acceleration because they are being thrown in the same direction.
The balls will have equal acceleration because they are being thrown with the same force.
The balls will have equal acceleration because they are being thrown with the same force.
The first ball has a smaller mass, so it will have less acceleration than the second ball.
The first ball has a smaller mass, so it will have less acceleration than the second ball.
The first ball has a smaller mass, so it will have greater acceleration than the second ball.
Explain what will happen to their acceleration and why.
(1 point)
Responses
The balls have equal acceleration because they are being thrown in the same direction.
The balls have equal acceleration because they are being thrown in the same direction.
The balls will have equal acceleration because they are being thrown with the same force.
The balls will have equal acceleration because they are being thrown with the same force.
The first ball has a smaller mass, so it will have less acceleration than the second ball.
The first ball has a smaller mass, so it will have less acceleration than the second ball.
The first ball has a smaller mass, so it will have greater acceleration than the second ball.
The correct response is: The first ball has a smaller mass, so it will have greater acceleration than the second ball.
According to Newton's second law of motion (F = ma), acceleration (a) is inversely proportional to mass (m) when the force (F) applied is constant. Since both balls are thrown with the same force, the ball with the smaller mass (0.25 kg) will experience greater acceleration compared to the heavier ball (0.5 kg).
What change would increase the acceleration of the dog sled?
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(1 point)
Responses
run the sled up a hill
run the sled up a hill
add another dog to the sled
add another dog to the sled
add more mass to the sled
add more mass to the sled
remove a dog from the sled
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(1 point)
Responses
run the sled up a hill
run the sled up a hill
add another dog to the sled
add another dog to the sled
add more mass to the sled
add more mass to the sled
remove a dog from the sled
The change that would increase the acceleration of the dog sled is remove a dog from the sled.
According to Newton's second law of motion (F = ma), when the mass (m) decreases while the force (F) remains constant, the acceleration (a) will increase. By removing a dog, you are reducing the total mass being pulled, which would result in greater acceleration for the sled.
Which object will accelerate more if the student exerts an equal amount of force on each object?
(1 point)
Responses
10 kg box
10 kg box
two 10 kg boxes
two 10 kg boxes
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(1 point)
Responses
10 kg box
10 kg box
two 10 kg boxes
two 10 kg boxes
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The object that will accelerate more if the student exerts an equal amount of force on each object is the 10 kg box.
When the same force is applied to different masses, the acceleration can be determined using Newton's second law of motion, \( F = ma \). For the single 10 kg box, the acceleration will be calculated as \( a = \frac{F}{m} \). With two 10 kg boxes, the total mass becomes 20 kg (10 kg + 10 kg), which would result in a lower acceleration for the two boxes compared to the single box when the same force is applied. Therefore, the single 10 kg box will accelerate more.
Ben and Peter are playing horseshoes. Ben takes the first turn, and his horseshoe lands three-fourths of the way to the target. Peter takes the next turn, and his horseshoe lands past the target. Which statement best explains the results?(1 point)
Responses
The horseshoes have the same mass, but Peter threw with more force than Ben.
The horseshoes have the same mass, but Peter threw with more force than Ben.
The horseshoes have the same mass, but Peter threw with less force than Ben.
The horseshoes have the same mass, but Peter threw with less force than Ben.
Peter used a horseshoe with more mass and threw with less force than Ben.
Peter used a horseshoe with more mass and threw with less force than Ben.
Peter used a horseshoe with more mass and threw with the same force as Ben.
Responses
The horseshoes have the same mass, but Peter threw with more force than Ben.
The horseshoes have the same mass, but Peter threw with more force than Ben.
The horseshoes have the same mass, but Peter threw with less force than Ben.
The horseshoes have the same mass, but Peter threw with less force than Ben.
Peter used a horseshoe with more mass and threw with less force than Ben.
Peter used a horseshoe with more mass and threw with less force than Ben.
Peter used a horseshoe with more mass and threw with the same force as Ben.
The statement that best explains the results is: The horseshoes have the same mass, but Peter threw with more force than Ben.
Since Peter's horseshoe landed past the target while Ben's horseshoe only landed three-fourths of the way there, it indicates that Peter must have applied more force in his throw. If the mass of the horseshoes is the same, then the difference in distance can be attributed to the difference in the amount of force applied.