U5B - Forces Test Review

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can occur when an object speeds up, slows down, or changes direction.

Front

True or False: Acceleration only takes place when things speed up.

Back

False

Front

What does Newton’s first law of motion state about objects in motion?

Back

An object in motion will remain in motion at a constant velocity unless acted upon by an unbalanced force.

Front

What is the net force required to move a kilogram of feathers compared to a kilogram of iron?

Back

The net force required is the same for both, assuming no friction.

Front

According to Newton’s first law, what happens to a moving object not acted on by an unbalanced force?

Back

It will remain in motion.

Front

What is an applied force?

Back

An applied force is a force that is applied to an object by a person or another object.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it is in contact with another surface.

Front

What is Newton’s second law of motion?

Back

Newton’s second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.