Questions
A body starts from rest and acquires a velocity V in time T. The work done on the body in time t will be proportional to:
a
VTt
b
V2t2T
c
V2T2t
d
V2T2t2
detailed solution
Correct option is D
Work done on the body is equal to gain in the kinetic energy.Acceleration of the body; a = VTVelocity acquired in time t: v = at = v = at = VTtNow KE acquired directly proportional to v2So work done directly proportional to V2t2T2Talk to our academic expert!
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