Force
A push or a pull
Gravity always pulls objects in this direction.
What is down or downward?
What is slows it or stops it?
The energy of motion.
Kinetic energy
A change in position over time.
Motion
Equal forces acting in opposite directions.
What is a balanced force?
When a ball falls, gravity makes it increase.
What is speed?
Ice or carpet has more friction.
What as carpet?
The stored energy before motion.
Potential Energy
The location of an object compared to something else.
Relative Location
If one side of a tug-of-war is stronger, the rope moves. This is an example of.
What is unbalanced force?
True or false: gravity only affects heavy objects.
False
A soccer ball rolls on grass and slows down. This is the force at work.
What is friction?
This is the energy in a roller coaster at the top of the hill.
Potential Energy
What tool do scientists use to show how position changes over time?
Position Graph
Two students push a desk the same time. One is on carpet and one is on tile. The student on the ________ will move faster.
What is tile?
If you throw a ball upward, how does gravity affect it on the way up and on the way down?
Slows it down going up and speeds it up going down
This is why race cars use special tires to grip the track.
What is "to increase friction and grip the road"
How does a stretched rubber band shows both potential and kinetic energy.
Potential when stretched. Kinetic when released.
If a toy car is pushed from the front and the back, what will happen to the car?
It will not move.
Riding a bike, this force makes the bike move.
What is pedaling?
Gravity cannot make an object go this direction.
What is side to side?
When a marble rolls from tile to carpet, this causes the marble to slow down and stop.
What is friction.
Three types of energy that we studied
Potential, Kinetic, Elastic potential
If a car is pushed only from the back, is this a balanced or unbalanced force?
Unbalanced