Question

A car is being driven by a force of 2.5 ×10^10 N.Travelling at a constant speed of 5 m/s ,it takes 2 minutes to reach a certain place . Calculate the work done....

Answer 1

Work done = force ×displacement

force = 2. 5×10^10 N

speed=5m/s

Time=2 minutes=120 second

distance travelled=speed×time

=5×120

=600

=6×10²m

work done=2.5×10^10×6×10²

=15×10^12 Joule

Answer 2

We know that Work = Force * Distance   -------------- (1)


We know that Distance = speed * time

                                        = 5 * 120 ( 2minutes = 120 seconds)

                                        = 600 M.   ------------ (2)

Substitute Equation (2) in (1), we get

Work = 2.5 * 10^10 * 600

          = 1.5 * 10^13

          = 15 * 10^12 J.


Hope this helps!