Force
What is a push or a pull on an object called?
A force
What word describes how fast something is moving?
speed
What do we call it when two objects hit each other?
a collision
When a ball falls and then bounces, energy moves between two types. Name both types.
Potential and Kinetic
Two identical balls: one moves 2 m/s, the other 4 m/s. Which has more energy and why?
The 4 m/s ball because it is moving 2x the amount of the other ball.
Give one example of a force you use in everyday life.
Answers vary
What is motion?
a change in an objects position
If two cars hit together at the same mass, speed, and force. What will happen?
The will collide and stop not roll back.
What is potential energy?
Stored energy waiting to be used.
What is speed?
how fast or slow an object moves
When two equal forces act on an object in opposite directions, what happens to the object’s motion? What is this force called?
The object stays still. This is a balanced force.
What is velocity
The speed and direction of an object
What is an example of a collision?
Answers may vary
What is kinetic energy?
The energy of motion.
Two balls are rolling down a hill. One hill is tall one hill is short. Which hill will the ball roll down at a slower speed?
The shorter hill.
Name the force that always pulls objects toward Earth.
Gravity
The rate an objects velocity changes over time.
What is the difference between an elastic collision (like two bouncy balls) and an inelastic collision (like clay)?
The elastic collision will bounce off of one another, where as the inelastic collision will just take the hit from the force.
What is energy?
The ability to do work.
Give an example of how we measure speed
Miles per hour, KM/H
What is it called when there are two unequal forces on either side of an object?
An unbalanced Force
What is an example of motion in a sport?
Answers may vary
A collision does not need a force. True or false?
False
At the top of a roller coaster drop do you have more potential or kinetic energy?
Potential
Where do you speed in sports?
Answers will vary.