Study Guide for Physics Quiz

Friction acts in a direction __________ to the direction of an object's motion.

• unrelated

• opposite

• equal

• perpendicular

Unless an object at rest is acted on by a force, it stays at rest due to its __________.

• matter

• friction

• inertia

• gravity

A(n) __________ can cause an object's motion to change.

• unbalanced force

• balanced force

• weight

• inertia

The amount of matter in an object is called its __________.

• weight

• force

• inertia

• Mass

The force of gravity on a person or object at the surface of a planet is known as __________.

• weight

• mass

• inertia

• air resistance

A push or pull is called a(n) __________.

• acceleration

• inertia

• motion

• force

The tendency of an object to resist a change in its motion is known as __________.

• balance

• force

• inertia

• mass

The force that one surface exerts on another when the two come in contact with each other and rub against each other is called __________.

• gravity

• friction

• pressure

• tension

According to Newton's 3rd Law of Motion, when a hammer strikes a nail and exerts a force on the head of the nail, the nail _____.

• disappears into the wood.

• creates friction with the hammer.

• exerts an equal but opposite force back on the hammer.

• moves at a constant speed.

The velocity of an object gives both speed and _____.

• direction

• weight

• force

• mass