Question 
Answer 
A push or pull on an object in order to change the motion of the object measured in newtons. 
Force 
The force used to move something a distance. 
Work 
Vibrations inside a medium. 
Wave 
The point in which the wave is the highest. 
Crest 
The point in which the wave is the lowest. 
Trough 
When wave particles move back and fourth in a coil. 
Longitudnal Wave 
When the coil is compacted. 
Compression 
When you spread spring coils apart. 
Rarefraction 
Spring coil waves moving up and down. 
Transverse Wave 
Waves that require a medium. 
Mechanical Waves 
Waves that can travel through empty space. 
Electromagnetic Waves 
The measure of how far particles in the medium move in the rest position. 
Amplitude 
The distance from any point on a wave to the next identical point on the same wave. 
Wavelength 
The number of waves that pass a point in a given amount of time. 
Frequency 
The measure of frequency. 
Hertz 
The speed the wave travels

Wave Speed 
The ability to do something 
Power 
A material in which waves can travel through. 
Medium 
If 68 W of power is produced in 18 seconds, how much work is done? 
1224 Joules 
How much time is needed to produce 720 Joules of work if 90 watts of power is used? 
8 seconds 
A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used? 
457.1 Watts 
A person weighing 600 N gets on an elevator. It lifts the person up 6 m in 10 seconds. How much power was used? 
360 Watts 
If 360 Joules of work are needed to move a crate a distance of 4 meters, what is the weight of the crate? 
90 N 
If a group of workers can apply 1000 newtons to move a crate 20 meters, what amount of work will they have accomplished? 
20,000 J 
If 68 Joules of work were necessary to move a 4 Newton crate. How far was the crate moved? 
17 M 
How much work is done in holding a 15 Newton sack of potatoes while in line at the grocery store for 3 minutes. 
7.55 Joules 