Force, Energy & Motion Science

Things around you that you can use to describe motion

frame of reference

Motion that is described based on a frame of reference

Relative motion

Metric unit of force

newton

Measure of the force of gravity on an object

weight

Force that keeps two objects that are touching each other from sliding past each other.

friction

Describes a certain place

position

Any change in position

motion

Measure of an object’s change in position during a unit of time

speed

any push or pull

force

speed direction Change in the speed or direction of an object’s motion

acceleration

Force that pulls all objects toward each other

gravity

To find a runner’s speed, you need to know the distance he or she ran and the -

time it took

When you watch a football game from a seat near the top of the stadium, your position and all the things around you are part of your-

Frame of reference

When you push a grocery cart, you are exerting -

force

Motion is stopped and started by-

forces

Riding down a hill on your bike, slowing down, and turning are all examples of-

acceleration

To go faster on a skateboard, you need to push it with more force or push with the same force for-

a longer time

To measure force, you can use a -

spring scale

What can you pick up by exerting just 1 newton of force?

an apple

Energy may exist in many states. Two of them are -

kinetic and potential

Kinetic energy is the energy of-

motion

Potential energy is -

stored energy

The greater the force -

the greater the change in motion will be

The more massive an object-

the less effect a given force will have on an object

Friction creates-

heat (and resistance)

Unless acted upon by a _______, objects at motion tend to stay in motion and objects at rest tend to stay at rest.

force

potential energy

kinetic energy