Question

A constant force of 40N acting on a body initially at rest gives it an acceleration of 0.1m/s inverse 2 for 4s .calculate the work-done by the force​

Answer 1

Correct Answer: Option C

Explanation

X = ut + 12at2

= (0 x 4) + (12 x 0.1 x 4 x 4)

= 0.8m

workdone = force x distance

= 40 x 0.8

= 32J