Question

12. Work done by an applied force of 20 N on a body moving on a rough horizontal plane with a uniform
velocity of 20 ms in one second is
a)40J
b) 0J
c) 400 J
d)20J​

Answer 1

Answer:

The work done on the body is 400 Joules

Explanation:

given that

applied force on a body,F=20N

velocity of the body,v=20 m/a

time,t=1sec

we need to find the work done on the body. it is given by the product of force and displacement

displacement =velocity×time

work done on a body is given by:

W=F×d

W=F×v×t

W=20N×20m/s×1s

W=400J

hence this is the required solution

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