Forces and Motion

Front

What is the force that resists motion between two objects that are touching?

Back

Friction is the force that resists motion between two objects that are in contact.

Front

______ measures an object's tendency to resist changing its motion.

Back

Inertia measures an object's tendency to resist changing its motion.

Front

What is the term for the force that pulls objects toward each other, like the Earth pulling you down?

Back

Gravity is the force that pulls objects toward each other.

Front

What is the term for a push or pull on an object?

Back

A force is a push or pull on an object.

Front

TRUE or FALSE: An object in motion will stay in motion unless a force acts on it.

Back

True. This is known as Newton's First Law of Motion.

Front

What is the formula to calculate speed?

Back

Speed = Distance / Time.

Front

If a car travels 100 meters in 5 seconds, what is its speed?

Back

The speed is 20 meters/second.

Front

What is the term for the change in velocity over time?

Back

Acceleration is the change in velocity over time.

Front

What is the effect of an unbalanced force on an object?

Back

An unbalanced force causes an object to accelerate or change its motion.

Front

What is inertia?

Back

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