Forces and Motion Review

Front

What are balanced forces?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What are unbalanced forces?

Back

Forces that are not equal in size and/or direction, causing a change in motion.

Front

What two measurements do you need to calculate speed?

Back

Distance and time.

Front

What is gravity?

Back

A force that pulls objects toward the center of the Earth.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What happens to an object in motion when balanced forces act on it?

Back

It continues to move at a constant speed in a straight line.

Front

What is the effect of friction on motion?

Back

Friction opposes motion, slowing down or stopping moving objects.

Front

How does mass affect the motion of an object?

Back

Greater mass requires more force to change its motion.

Front

What is the relationship between force and acceleration?

Back

Force equals mass times acceleration (F = ma).