Question

A car of weight 20000 N climbs up a hill at a steady speed of 8 m/s gaining a height of 120 m in 100 s. Calculate : a) work done by the car b) power of engine of car

Answer 1

a) Work = Force x displacement

             = 20000 x 120

             = 2400000 J

b) Power = W/T

               = 2400000/100

               = 2400 Watts

Hope this helps...

Answer 2

Answer:

hope it helps

Explanation:

force = 20000N

speed = 8m/s

distance = 120 m

time = 100s

(a) work done= force × displacement

so,

20000×120

= 2400000 J

(b) power = work done / time

= 2400000/ 100

= 24000 w