Chapter 12 Review

Front

What does Newton's first law of motion state?

Back

An object at rest remains at rest unless acted on by an unbalanced force.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity.

Front

How do you calculate momentum?

Back

Momentum = Mass x Velocity.

Front

Which has more momentum: a 3.0 kg sledgehammer swung at 1.5 m/s, or a 4.0 kg sledgehammer swung at 0.9 m/s?

Back

The 3.0 kg sledgehammer has more momentum.

Front

What happens to an object in free fall?

Back

It accelerates at a constant rate until it hits the ground.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist a change in its motion.

Front

What is Newton's second law of motion?

Back

Force = Mass x Acceleration.

Front

What is the relationship between force, mass, and acceleration?

Back

The force acting on an object is equal to the mass of the object multiplied by its acceleration.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion.

Front

What is the effect of a balanced force on an object?

Back

A balanced force does not change the motion of an object.