What is a newton? (1 point)

• the unit in which force is measured
• a force that pulls objects toward the ground
a force that changes the motion of an object
a non-contact force

7 answers

• The unit in which force is measured is a newton.
A tennis player swings and hits the ball away. How does the force of the tennis racket affect the motion of the ball?
(1 point)
• It changes both the direction and the speed of the ball.
• It changes the direction of the ball but not the speed.
• It changes the speed of the ball but not the direction.
• It does not change the speed or the direction of the ball.
• It changes both the direction and the speed of the ball.
A net force is applied to a moving object. Which statement best describes the effect of the force? (1 point)
• The force will cause the speed of the object to increase.
• The force will cause the object to come to a stop.
• The force will cause a change in the direction of the object.
The force will cause a change in the momentum of the object.
• The force will cause a change in the momentum of the object.
What is the momentum of an object? (1 point)
the state of motion of an object with mass
• the net force acting on the object
• the rate of change in the velocity of an object
• the velocity of the object
• The momentum of an object is the rate of change in the velocity of an object.
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