When a force is applied and the object moves in the same direction as the force.
What is work.
100
The RATE at which work is done or energy is transferred AND the SI unit in which it is measured.
What is Power. Measured in Watts.
100
The two ways that simple machines help do work.
What is changing the input force and changing the direction of force.
100
The number of lever classes.
What is 3.
100
The definition of energy
What is the ability to do work?
200
The SI unit that work is measured in.
What is Joule
200
The amount of Power when a weight lifter does 500 Joules of work in 5 seconds.
What is 100 Watts
200
The two families of simple machines.
What is incline plane and lever families.
200
The two parts of a lever include the rigid arm and ____________, which the arm pivots around.
What is fulcrum.
200
The SI unit for energy.
What is Joule?
300
The amount of work that is done, when a boy exerts a force of 300 Newtons and moves an object 0 Meters.
What is Zero. No work is done.
300
The amount of power when another weight lifter presses a 300 Newton weight 2 meters above his head in 3 seconds.
Hint: you will have to use two equations.
What is 200 Watts
300
What we call a machine that has more than one type of simple machine such as scissors or a car.
What is compound machine.
300
The type of lever where the input force is in the middle.
What is third class.
300
Where all living things get their energy.
What is the sun.
400
The amount of work done when a boy exerts a force of 70 Newtons and lifts and object 1.5 Meters.
What is 105 Joules.
400
The amount of power required to do 200 Joules of work in 2.5 seconds.
What is 80 Watts
400
The name of the simple machine that is an inclined plane wrapped around a cylinder.
What is a screw.
400
The wheelbarrow is an example of this type of lever.
What is second class.
400
The type of energy that depends on height. Also known as the energy of position.
What is potential energy.
500
The amount of FORCE applied when a child pushes a sled up a hill and does 600 Joules of work over 10 Meters.
Hint: Plug into your work equation!
What is 60 NEWTONS.
W=Fxd
600J = F x 10m
600J/10m = F
60N = F
500
The amount of power when a boy lifts a 200 Newton object 10 m in 500 seconds.
What is 4 Watts
500
A ramp is an incline plane that allows for an input force that is ____________ than the output force.
What is less than.
500
Draw an example of a lever and label the input, output, and fulcrum.
What is Ex) 1st class - Fulcrum in middle.
Ex) 2nd class - Output in middle.
Ex) 3rd class - Input in middle.
500
The type of energy that depend on the speed or velocity.