What Is Rosie's Power Output When Pushing a Box?

[Yavko2510]

Homework Statement

Rosie (mass 58 kg) pushes a box with a horizontal force of 170N (38.216 lb) at a speed of 16 m/min. What is Rosie's power output? Answer in units of W.

Homework Equations

Work/Time = Power

MGH/T = Power
.5MV^2 = Power

The Attempt at a Solution

58(.2667 m/sec)^2/2 = power
2.06 = power

 

[psykatic]

The Power output is rather Work done multiplied by the time taken!

 

[LowlyPion]

The horizontal force is 170 N

P = W/T = F*D/T = F*V

Check your units. You calculated Kinetic energy.

Watts are N-m/s.