Vocab
What is newtons?
How we measure force.
What is kinetic energy?
Energy in motion
What is a balanced force?
Forces that cancel each other out when acting together.
Describe the energy transformation.
A bike sitting at the top of a hill, then the bike rolling down the hill.
What is friction?
A force that works against motion.
What is speed?
The distance an object moves in an amount of time.
What is potential energy?
Stored energy
What is an unbalanced force?
Forces that are not equal to each other.
A book sitting on a desk. Someone knocking the book off the desk.
The book sitting still has potential energy. The book being knocked off has kinetic energy.
What is work?
A force used to move an object a certain distance.
What is velocity?
The objects speed & direction of motion
What type of energy is being used?
A roller coaster going down a hill.
Kinetic Energy
Which type of force is being used?
A car that continues to move at the same speed.
Balanced forces
Describe the energy transformation.
A rubber band being flicked, then the rubber band lying down on the table.
The rubber band being flicked has kinetic energy, then it lying down on the table has potential.
What is inertia?
The tendency of an object in motion stays in motion, and an object at rest stays at rest.
A force that acts over a distance & pulls objects together.
A car stopped at a red light.
Potential energy
Which type of force is being used?
A fruit falling from a tree.
Unbalanced force
Give an example of a household object that transforms energy.
Answers will vary
Which one of the following words represents the statement: acceleration, friction, inertia
After she crosses the finish line she stops pushing her feet, but she still moves forward.
Inertia
What is acceleration?
Any change over time in the speed or direction of a moving object.
Which type of energy is being use?
A man climbing stairs
Kinetic
Which type of force is being used?
An object floating on water.
Balanced force
Give 2 examples of energy changing from one form to another.
Answers will vary
How can we determine the speed of a moving object?
Dividing the distance traveled by time spent moving.