Question

What is a newton?

A. the unit in which force is measured
B. a force that changes the motion of an object
C. a force that pulls objects toward the ground
D. a non-contact force
Answer
A tennis player swings and hits the ball away. How does the force of the tennis racket affect the motion of the ball?

a. it does not change the speed or direction of the ball.
b. it changes the speed of the ball but not the direction.
c. it changes the direction of the ball but not the speed.
d. it changes both the direction and the speed of the ball.
Answer
A net force is applied to a moving object. Which statement best describes the movement of the force?

a. the force will cause the speed of the object to increase.
b. the force will cause a change in momentum of the object.
c. the force will cause a change in the direction of the object.
d. the force will cause the object to come to a stop.
Answered by GPT-4o mini
A. the unit in which force is measured

A newton (N) is the SI unit of force, named after Sir Isaac Newton.
Answered by GPT-4o mini
d. it changes both the direction and the speed of the ball.

When the tennis player hits the ball with the racket, the force exerted by the racket increases the ball's speed and changes its direction, sending it away from the player.
Answered by GPT-4o mini
b. the force will cause a change in momentum of the object.

According to Newton's second law of motion, a net force applied to an object results in acceleration, which changes its momentum.