Equations
F x d
What is the equation for Work?
How much work is done by a 12 Newton force if it pushes a object 8 meters?
96 Joules
Meter
What is the unit of distance?
What is the kinetic energy of a 16 kilogram object moving 5 m/s?
200 Joules
A force pushes an object to the right, but the object moves upwards! Did this force do any work to the object?
No, the direction of motion is different from the direction of force
PE + KE
What is the equation for Total Energy?
How much power is used in 3 minutes by an engine doing 600 Joules of Work?
3.33 Watts
Second
What is the unit of time?
What is the potential energy of a 700 kilogram boulder atop a 45 meter hill?
315,000 Joules
Chemical, Potential, Gravitational
What are forms of Potential Energy?
(1/2) x m x v2
What is the equation for Kinetic Energy?
How long does it take a 150 Watt light bulb to die out if it only has 5250 Joules fed to it?
35 seconds
Newton
What is the unit of Force?
What is the mass of a bird with kinetic energy 125 Joules and flying 5 m/s?
10 kilograms
Heat, Light, Sound, Electricity
What are forms of Kinetic Energy?
m x g x h
What is the equation for Potential Energy?
How much work does some power of 30,000 Watts is used in 40 seconds?
1,200,000 Joules
Joule
What is the unit of energy?
What is the height of a ramp if a 60 kilogram bicyclist is going 7 m/s after reaching the bottom?
2.45 meters
When work is done on a system, the kinetic energy changes
What is the Work-Energy Theorem?
W/t
What is the equation for Power?
What distance is an object pushed if 700 Watts are used up in 10 seconds after pushing it with 50 Newtons?
140 meters
Watt
What is the unit of Power?
A hot air balloon is floating with 1440 Joules of stored energy. A bundle of rocks is dropped off the edge and is measured to be moving at 12 m/s just as it crashed to the ground. What is the mass of these rocks?
20 kilograms
The end of a pendulum is lifted to a horizontal position and released. How high will it swing?
Back up to the starting height