Question

. How much power is used to move a 5 kg mass 28 meters in 8 seconds?

Answer 1

171.5Watts

Step-by-step explanation:

Given parameters:

Mass = 5kg

Distance = 28m

Time = 8s

Unknown:

Power = ?

Solution:

Power is the rate at which work is done;

Power =
`(work done )/(time taken)`

Work done = force x distance = mg x d =

m is the mass

g is the acceleration due to gravity

d is the distance

Work done = 5 x 9.8 x 28 = 1372J

Power =
`(1372)/(8)` = 171.5Watts