Force & Motion Test

Front

If an object is not moving, what must happen for it to start moving?

Back

An outside force must act upon it.

Front

The force that pulls falling objects toward Earth is called _______.

Back

gravity

Front

The unit of measure for force is a _______.

Back

newton

Front

When forces are balanced, the net force is _____?

Back

zero

Front

Which of the following is an example of acceleration? A car stopped at a red light, a truck traveling 65 mph north, a person jogging at 3 meters/second along a winding path, a boat sailing south at 5 knots

Back

a person jogging at 3 meters/second along a winding path

Front

An object’s gravitational force depends primarily on the object’s _______.

Back

mass

Front

The rate at which velocity changes is called _______.

Back

acceleration

Front

The tendency of an object to resist any change in its motion is known as _______.

Back

inertia

Front

Which explains what happens to the force of gravity between two objects if the distance between them decreases?

Back

Gravity increases

Front

The force you have to overcome to start an object moving is _________.

Back

static friction