How much power is expended on a 20-N rock that you lift 1.5 meters up in 10 seconds?
A. 3 Joules
B. 30 Joules
C. 3 Watts
D. 30 Watts

The answer to your question is the letter C. 3 Watts

Explanation:

Data

Power = ?

Force = 20 N

Distance = 1.5 m

time = 10 s

Formula

Work = force x distance

Power = Work/time

Process

a) Calculate the Work

   Work = 20 x 1.5

   Work = 30 J

b) Calculate the Power

    Power = 30J/10s

    Power = 3 Watts

The units of Power are Watts and the units of Work and energy are Joules.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

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