Question 
Answer 
Formula for work 
W=FxD 
Formula for power 
P=W?T 
Wave speed formula 
Wave speed = Wave length ? Wave period 
Tommy lifted a box, he applied 30N and carried it for 2M, how much work was applied? 
30Nx2M=60J 
Force 
A push or pull exerted on an object (newtons) 
Work 
The use of force to move an object some distance (Joules) 
Wave 
Vibrations of particles 
Medium 
The material (solid, liquid, or gas) that waves travel through 
Crest 
The highest point on a wave 
Trough 
The lowest point on a wave 
Longitudinal wave 
Particles move parallel to the direction that the wave moves 
Compression 
When part of a wave becomes more compact 
Rarefaction 
When part of a wave spreads out 
Transverse wave 
Particles move perpendicular to the direction of the wave 
Mechanical wave 
Waves that require a medium 
Electromagnetic waves

Waves are not disturbances in a physical medium 
Amplitude 
Measure of how far particles in the medium move from the rest position 
Wavelength 
The distance from any point on a wave until the next identical point 
Frequency 
The number of waves that pass a point in a given amount of time 
Hertz (Hz) 
The measure of frequency 
Wave speed 
How well a wave length moves through a medium 
Wave length formula 
Wave length = wave speed ? frequency 
Lucy lifted an apple with 20J and held it for 2sec, how much power was used? 
20J?2sec=10watt 
Bert wanted to know his work ability after using 80N and walking 4M 
80Nx4M=320J 
If Sophie moved 10M and had a work of 80J, what was her force? 
80J?10M=8N 
Bill had a work of 60J and 30N what was his distance? 
60J?30N=2M 
Clary has a force of 80N and traveled 5M, what is her work? 
80Nx5M=400J 
If a wave is 8in and the wave period is 4 waves per second what is the wave speed? 
8IN?4WPS=2 wave speed 
A body builder has a force of 150N and has a work of 300J what was his distance? 
300J?150N=2M 
Jace walked for 1H and had a work of 35J what was his power? 
35J?1H=35watt 