Potential/kenetic energy
What two forms of energy can be found?
Potential or Kinetic
What is a force?
A push or a pull
The greater the amount of force the greater the object will ________________
move
If you push the table to the right, which direction is the friction working.
left or in the opposite direction
When you turn a doorknob on a door a rod in the inside releases a latch. What simple machine does the door know and rod make up?
Wheel and axle
What is POTENTIAL energy?
When energy is being stored
What is NET FORCE?
The sum of all the forces acting on an object.
Name a force that stops an object in motion
Gravity
When you apply the brakes of a bike, it creates friction and converts it into what type of energy?
Heat energy.
Rub hands
A wheel with a rope is used to hoist a flag. What simple machine is this?
pulley
What is Kinetic Energy?
When energy is in motion
What is A BALANCED FORCE?
When the net force is equal and no movement occurs
State NEWTON'S 3RD LAW OF MOTION
For every action there is an equal and opposite reaction
Which direction does friction work?
The opposite of the motion.
A ramp is used for loading a truck. What simple machine is this?
inclined plane
How do you INCREASE objects potential energy?
Change its height and its mass.
What does an UNBALANCED FORCE do?
It causes an object to change its motion in two ways. If an object is at rest it will cause it to move. It an object is moving it can change the speed and direction of an object.
STATE NEWTONS 2ND LAW OF MOTION
THE ACCELERATION of an object depends on the mass of the object and the amount of force applied
How does friction affect the motion of an object?
The more friction motion decreases.
The less friction motion increases.
A tool was used to open a can of paint. What kind of simple machine was this?
A lever
If you increase an object's mass you decrease its potential energy. (true or false)
FALSE
What type of force happens in a game of tug-of-war when it is a tie?
Balanced force
STATE NEWTONS FIRST LAW OF MOTION
An object a rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
When there is friction, the energy of an object's motion is converted into ____________ energy
Heat
What type of simple machine is a knife blade?
A wedge