Force and Motion

Front

What is the force that keeps satellites in orbit around Earth?

Back

Gravity.

Front

If a man and a ball travel 90 m in 9 seconds, what is their average speed?

Back

10 m/s.

Front

What is speed?

Back

Speed is the distance something travels in a set amount of time.

Front

What happens when two people pull on opposite ends of a rope with the same force?

Back

Both girls will stay in the same place.

Front

A measure of how fast something moves over a certain distance is ________________.

Back

Speed.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is inertia?

Back

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

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N).