Question

A man carrying a box of mass 20kg climbs up to a height of 10 m in 40 sec. Calculate the power delivered by him to the box​

Answer 1

Answer:

80 is answer

Step-by-step explanation:

Answer 2

Step-by-step explanation:

1st) to find the power we need the work done

to find the work done: we need force and distance. (F x d)

distance= 10 m

force= mass x acceleration

so, 20 kg x 10 = 200 N

work done = 200 N x 10 m = 2000 N.m or J

power= work done/time

so, 2000 J/ 20s = 100 W