Vocabulary
What is gravity?
A force that pulls things toward Earth.
You are on a roller coaster. On what part of the roller coaster are the forces balanced?
At the beginning or end, when you are stopped.
What is potential energy?
The energy stored in an object.
What is the law of conservation of energy?
Energy cannot be created or destroyed; it can only change from one form to another.
What is mass related to?
Weight
You are playing tennis. When is the ball experiencing an unblanaced force?
When it is getting hit and/or when it is moving.
What is kinetic energy?
The energy an object has when it is moving.
A ball is sitting on a ledge and then falls off. When did it have potential energy and when did it have kinetic energy?
It had potential energy sitting on a ledge and kinetic energy as it moved down and fell.
What is energy?
The ability to do work.
Your friend pushes you on a swing. Is this an unblanced force or a balanced force?
Unbalanced force.
A ball is sitting on a ledge. What type of energy does it have?
Potential energy
In a game of basketball, what gives the ball energy to move through the air?
Energy is transferred from the player to the ball.
Define force.
A push or pull on an object.
Which is an unbalanced force. A ball sitting still or a ball being kicked?
Being kicked.
If something is moving, does it have energy?
Yes
If you kick a ball, has energy been transferred to the ball?
Yes