Force and Motion

Vocab for the win

100

How is velocity different from speed?

Velocity includes speed and direction

200

The quantity of matter in something

Mass

300

The force that always opposes motion

Friction

Balancing Act

100

True or False: An object moves only when the forces acting on it are balanced.

False

200

What is the net force on the race car?

1900 N Forward

300

Are the forces in the tug-of-war picture balanced or unbalanced?

Unbalanced

Fill in the _________

100

An object at rest _______________ until _____________________.

stays at rest

acted on by an outside force

200

For every action there is ______________________.

an equal and opposite reaction

300

Newton's Second law:

Force = __________________

Mass times acceleration

F=MA

Forces

100

In which direction does gravity always work?

down

200

True or False:

There is less gravity on the moon than on Earth because the moon is smaller than the Earth

True

300

True or False:

An object weighs just as much on the moon as it does on Earth because it has the same mass.

False