Work, Power, and Energy

Pick which equation you would use to solve:
100 J of work were done over 5 seconds to do three push ups.

•  $PE=mgh$ 

• 
  

   $KE\ =\frac{1}{2}mv^2$  

•  $W=Fx$  

•  $P=\frac{W}{t}$  

Pick which equation you would use to solve:

A rock of 5kg, is dropped from a height of 5 meters and accelerates to the ground at a rate of 9.81m/s^2.

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Pick which equation you would use to solve:

A tennis ball with a mass of 1kg is falling to the ground at 9.81 m/s^2. The distance it covers is 2meters. 

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

Pick which equation you would use to solve:

A box is pushed a distance of 3m with a force of 10N.

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Pick which equation you would use to solve:

A car with a mass of 1200kg has a velocity of 20m/s.

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Tags

NGSS.MS-PS3-1

Pick which equation you would use to solve:

Running up a flight of stairs took 500J of work and was done in 10 seconds. 

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Pick which equation you would use to solve:

A 15kg fox ran after a rabbit with a velocity of 30m/s over a distance of 50m. 

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Tags

NGSS.MS-PS3-1

Pick which equation you would use to solve:

When you do a push up your body travels a distance of 0.5m and the force applied is 600N. 

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Pick which equation you would use to solve:

To do one repetition of a burpee, it takes 500 J of work over 6seconds.

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$

Pick which equation you would use to solve:

A toy car is pushed with a force of 5N a distance of 2.5 meters.

• $PE=mgh$

• $KE=\frac{1}{2}mv^2$

• $W=Fx$

• $P=\frac{W}{t}$