Physics Questions on Newton's Laws

An object’s resistance to change in motion is dependent solely on what quantity?

• Mass

• Velocity

• Acceleration

• Force

Inertia is the resistance to change in motion so inertia depends solely on what?

• Mass

• Velocity

• Acceleration

• Force

What is required to cause acceleration?

• Force

• Mass

• Velocity

• Energy

What is the net force if you push a cart to the right with 5N of force and a friend pushes the cart to the left with 5N of force?

What is the net force if you start to pull instead of push in the previous scenario?

Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose that you visit that place (just suppose) and throw a rock. What will the rock do?

• The rock will float in place.

• The rock will move in a straight line indefinitely.

• The rock will fall back to the starting point.

• The rock will move in a circular path.

Supposing you were in space in a weightless environment, would it require a force to set an object in motion?

• Yes, a force is required to set an object in motion.

• No, a force is not required to set an object in motion.

Why doesn’t a ball roll on forever after being kicked at a soccer game?

• Because of gravity

• Because of friction

• Because of air resistance

• Because of the ball's weight

True or False: Once the object hits the water, the forces are balanced and the object will stop. Support your answer with reasoning.

• True

• False

What happens to an object in motion if no external force is applied to it?

• It will accelerate.

• It will continue moving at a constant speed.

• It will eventually stop.

• It will change direction.