A car’s engine provides a forward force of 2000 N while the force of air resistance is 825 N in the opposite direction. With what force will the car move, and in which direction?(1 point) Responses 16000 N backward 16000 N backward 1175 N forward 1175 N forward 2825 N forward 2825 N forward 1175 N backward
Two movers are attempting to push a couch up a ramp. One mover applies a force of 75 N to the right, but the force of friction between the couch and the ramp is providing a force of 110 N in the opposite direction, and the couch slides down the ramp. At minimum, how much force will the second mover need to apply to help push the couch up the ramp? (1 point) Responses 110 N 110 N 35 N 35 N 36 N 36 N 75 N 75 N
A group of students conduct an experiment to study Newton’s second law of motion. They applied a force to a toy car and measure its acceleration. The table shows the results. Force (N) Acceleration (m/s²) 2.0 5.0 3.0 7.5 6.0 15.0 If the students graph the data points, which conclusion will they be able to make? (1 point) Responses The data points will fall along a line. This shows that as the force increases, the acceleration decreases. The data points will fall along a line. This shows that as the force increases, the acceleration decreases. The data points will not fall along a line. This shows that as the force increases, the acceleration increases. The data points will not fall along a line. This shows that as the force increases, the acceleration increases. The data points will not fall along a line. This shows that as the force increases, the acceleration decreases. The data points will not fall along a line. This shows that as the force increases, the acceleration decreases. The data points will fall along a line. This shows that as the force increases, the acceleration increases. The data points will fall along a line. This shows that as the force increases, the acceleration increases. Skip to navigation
Use the image to answer the question below. In the experimental setup shown, a car has one end of a string attached to it, and the other end is attached to a fixed number of metal discs. The car moves along the table and two probes sense the motion of the car. The probes send information to a computer that displays the acceleration and velocity of the experiment. When looking at these results, which quantity stays constant during the trials? (1 point) Responses force force velocity velocity acceleration acceleration mass mass Skip to navigation
Imagine a scenario in which an animal's force is pushing itself forward 5 N, friction is pushing it 4 N backward, gravity is pushing the animal 10 N down, and the animal is pushing itself 10 N up. Describe the movement of the animal.(1 point) Responses It moves 29 N forward because that's the net force. It moves 29 N forward because that's the net force. It moves forward and upward because those are the greatest net forces. It moves forward and upward because those are the greatest net forces. It moves 10 N down and 10 N up as those are the greatest forces acting on the animal. It moves 10 N down and 10 N up as those are the greatest forces acting on the animal. It only moves forward because there is a net force forward. It only moves forward because there is a net force forward.
Two rockets with the same mass are accelerated. Rocket A accelerates twice as quickly as rocket B. Which statement is correct?(1 point) Responses The motor in rocket A is a third as powerful as the motor in rocket B. The motor in rocket A is a third as powerful as the motor in rocket B. The motor in rocket A is half as powerful as the motor in rocket B. The motor in rocket A is half as powerful as the motor in rocket B. The motor in rocket A is twice as powerful as the motor in rocket B. The motor in rocket A is twice as powerful as the motor in rocket B. The motor in rocket A is four times as powerful as the motor in rocket B. The motor in rocket A is four times as powerful as the motor in rocket B.
A model rocket has a mass of 0.2 kg, with a motor that can provide a force of 100 N. A second model rocket is being built with the same motor, but it is being designed to accelerate half as much as the first rocket. What kind of change can be made in the design to achieve this objective? (1 point) Responses The mass of the second rocket should be 0.2 kg. The mass of the second rocket should be 0.2 kg. The mass of the second rocket should be 0.1 kg. The mass of the second rocket should be 0.1 kg. The mass of the second rocket should be 0.4 kg. The mass of the second rocket should be 0.4 kg. The mass of the second rocket should be 0.01 kg.
Five motorboats are being tested to see which reaches the highest velocity in the same amount of time. After graphing the acceleration versus force for each motorboat, the graph is a sloped line with a y-intercept of zero. Which statement is correct about these motorboats?(1 point) Responses All five motorboats have the same final velocity, which can be calculated from the graph. All five motorboats have the same final velocity, which can be calculated from the graph. All five motorboats have the same mass, which cannot be calculated from the graph. All five motorboats have the same mass, which cannot be calculated from the graph. All five motorboats have the same mass, which can be calculated from the graph. All five motorboats have the same mass, which can be calculated from the graph. All five motorboats have the same final velocity, which cannot be calculated from the graph.
If a soccer ball’s mass is 5 kg and a player who weighs 50 kg kicks the soccer ball forward with a force of 7.5 N , how much force does the ball exert on the player’s foot and in what direction?(1 point) Responses 7.5 N forward 7.5 N forward 7.5 N backward 7.5 N backward 100 kg forward 100 kg forward 10 kg/N backward
A toy helicopter flies forward with a force of 25 N into an oncoming wind of 10 N. The force of gravity pulls the helicopter down with a force of 15 N, but the propeller is providing an upward force of 25 N. Which of the following accurately describes the helicopter’s force? (1 point) Responses The toy helicopter is flying forward with a force of 10 N and upward with a force of 5 N. The toy helicopter is flying forward with a force of 10 N and upward with a force of 5 N. The toy helicopter is flying forward with a force of 15 N and upward with a force of 10 N. The toy helicopter is flying forward with a force of 15 N and upward with a force of 10 N. The toy helicopter is flying forward with a force of 15 N. The toy helicopter is flying forward with a force of 15 N. The toy helicopter is flying forward with a force of 5 N and upward with a force of 5 N.
A student is comparing the amount of force required to move a bowling ball and then a ping pong ball both 5 feet forward. Which object requires less force to move it 5 feet and why?(2 points) Responses the ping pong ball requires less force to move 5 ft forward because the mass of the ping pong ball is greater than the mass of the bowling ball the ping pong ball requires less force to move 5 ft forward because the mass of the ping pong ball is greater than the mass of the bowling ball the bowling ball requires less force to move 5 ft forward because the mass of the bowling ball is less than the mass of the ping pong ball the bowling ball requires less force to move 5 ft forward because the mass of the bowling ball is less than the mass of the ping pong ball the ping pong ball requires more force to move 5 ft forward because the mass of the ping pong ball is greater than the mass of the bowling ball the ping pong ball requires more force to move 5 ft forward because the mass of the ping pong ball is greater than the mass of the bowling ball the ping pong ball requires less force to move 5 ft forward because the mass of the ping pong ball is less than the mass of the bowling ball
__________ describes how fast something is going, whereas, _________________ describes how fast something is going in a certain direction. (1 point) Responses rate, velocity rate, velocity rate, speed rate, speed speed, velocity speed, velocity speed, acceleration speed, acceleration Question 2 Acceleration is any change in what two things? (select two)(1 point) Responses speed speed direction direction gravity gravity force force Skip to navigation
15 When a soccer ball is at rest on the ground, what are the balanced forces that are acting on it?(1 point) Responses Air resistance is pulling down on the soccer ball and the Gravitational force is pushing up on the soccer ball. Air resistance is pulling down on the soccer ball and the Gravitational force is pushing up on the soccer ball. Normal force is pushing up on the soccer ball and the Gravitational force is pulling down on the soccer ball. Normal force is pushing up on the soccer ball and the Gravitational force is pulling down on the soccer ball. Normal force is pulling down on the soccer ball and Gravitational force is pushing up on the soccer ball. Normal force is pulling down on the soccer ball and Gravitational force is pushing up on the soccer ball. Air resistance is pushing up on the soccer ball and the Gravitational force is pulling down on the soccer ball. Air resistance is pushing up on the soccer ball and the Gravitational force is pulling down on the soccer ball. Question 2 A force of 100 N to the right is applied to a soccer ball when it is kicked. An opposite force of 5 N to the left is applied to the soccer ball due to the friction of the grass. What is the net force applied to the object?(1 point) Responses 95 N to the left 95 N to the left 105 N to the left 105 N to the left 95 N to the right 95 N to the right 105 N to the right 105 N to the right Question 3 When the soccer ball is moving through the air to the right, what is the main force that is acting on the ball, causing it's movement to the right, to slow down? (1 point) Responses Friction from contact with the ground Friction from contact with the ground Air Resistance (drag or fluid friction) Air Resistance (drag or fluid friction) Normal Force Normal Force Gravitational Force Gravitational Force Question 4 When the soccer ball comes in contact with the ground it bounces back up. Why does that happen?(1 point) Responses The ground pushes back with equal force but in the same direction. The ball bounces because the mass of the ball is greater than the mass of the Earth. The ground pushes back with equal force but in the same direction. The ball bounces because the mass of the ball is greater than the mass of the Earth. The ground pushes back with equal force but in the opposite direction. The ball bounces because the mass of the ball is greater than the mass of the Earth. The ground pushes back with equal force but in the opposite direction. The ball bounces because the mass of the ball is greater than the mass of the Earth. The ground pushes back with equal force but in the opposite direction. The ball bounces because the mass of the ball is less than the mass of the Earth. The ground pushes back with equal force but in the opposite direction. The ball bounces because the mass of the ball is less than the mass of the Earth. The ground pushes back with equal force but in the opposite direction. The ball bounces because the mass of the ball is equal to the mass of the Earth. The ground pushes back with equal force but in the opposite direction. The ball bounces because the mass of the ball is equal to the mass of the Earth. Skip to navigation
1 answer
Here are the answers to the questions you provided:
A car’s engine provides a forward force of 2000 N while the force of air resistance is 825 N in the opposite direction. With what force will the car move, and in which direction?
Response: 1175 N forward
Two movers are attempting to push a couch up a ramp. One mover applies a force of 75 N to the right, but the force of friction between the couch and the ramp is providing a force of 110 N in the opposite direction, and the couch slides down the ramp. At minimum, how much force will the second mover need to apply to help push the couch up the ramp?
Response: 110 N
If the students graph the data points, which conclusion will they be able to make?
Response: The data points will fall along a line. This shows that as the force increases, the acceleration increases.
When looking at these results, which quantity stays constant during the trials?
Response: mass
Imagine a scenario in which an animal's force is pushing itself forward 5 N, friction is pushing it 4 N backward, gravity is pushing the animal 10 N down, and the animal is pushing itself 10 N up. Describe the movement of the animal.
Response: It only moves forward because there is a net force forward.
Two rockets with the same mass are accelerated. Rocket A accelerates twice as quickly as rocket B. Which statement is correct?
Response: The motor in rocket A is twice as powerful as the motor in rocket B.
A model rocket has a mass of 0.2 kg, with a motor that can provide a force of 100 N. A second model rocket is being built with the same motor, but it is being designed to accelerate half as much as the first rocket. What kind of change can be made in the design to achieve this objective?
Response: The mass of the second rocket should be 0.4 kg.
Which statement is correct about these motorboats?
Response: All five motorboats have the same mass, which cannot be calculated from the graph.
If a soccer ball’s mass is 5 kg and a player who weighs 50 kg kicks the soccer ball forward with a force of 7.5 N, how much force does the ball exert on the player’s foot and in what direction?
Response: 7.5 N backward
A toy helicopter flies forward with a force of 25 N into an oncoming wind of 10 N. The force of gravity pulls the helicopter down with a force of 15 N, but the propeller is providing an upward force of 25 N. Which of the following accurately describes the helicopter’s force?
Response: The toy helicopter is flying forward with a force of 15 N and upward with a force of 10 N.
A student is comparing the amount of force required to move a bowling ball and then a ping pong ball both 5 feet forward. Which object requires less force to move it 5 feet and why?
Response: The ping pong ball requires less force to move 5 ft forward because the mass of the ping pong ball is less than the mass of the bowling ball.
__________ describes how fast something is going, whereas, _________________ describes how fast something is going in a certain direction.
Response: speed, velocity
Acceleration is any change in what two things? (select two)
Response: speed, direction
When a soccer ball is at rest on the ground, what are the balanced forces that are acting on it?
Response: Normal force is pushing up on the soccer ball and the Gravitational force is pulling down on the soccer ball.
What is the net force applied to the object?
Response: 95 N to the right
When the soccer ball is moving through the air to the right, what is the main force that is acting on the ball, causing its movement to the right, to slow down?
Response: Air Resistance (drag or fluid friction)
When the soccer ball comes in contact with the ground it bounces back up. Why does that happen?
Response: The ground pushes back with equal force but in the opposite direction.
Feel free to ask if you have more questions or need further clarification!
