Motor 1 does 30 J of work in 10 s,motor 2 does 2 J of work in 5 s,motor 3 does 7 J of work in 2 s,and motor 4 does 7 J of work in 3 s.List the motors in order of highest power produced to lowest power produced.
A)2,4,1,3
B)3,4,1,2
C)1,3,4,2
D)3,1,4,2

Question

Quizplus · Accepted Answer

Power is calculated as work done divided by time. For each motor: Motor 1: 30 J / 10 s = 3 W, Motor 2: 2 J / 5 s = 0.4 W, Motor 3: 7 J / 2 s = 3.5 W, Motor 4: 7 J / 3 s = 2.33 W. Ordering from highest to lowest power gives: 3, 1, 4, 2.

Motor 1 Does 30 J of Work in 10 S,motor