Question

A 3500 W motor does 8000 J of work when it lifts a Rhinoceros 30.0 m. How long did this take?

Answer 1

Answer:68.57s

Explanation:The question requires me to solve for the time it takes the lift the Rhino through that distance.

We just apply the change of subject of formular.

P=workdone/time.

Making time the subject of formular,

We get

time =workdone/Power

But workdone =force * distance.

So therefore, t= 8000*30/3500

t=68.57s