Question

A body of mass 5 kg starts from rest and accelerate with constant acceleration of 2 m/s2

. Find

its kinetic energy after 2 seconds.​

Answer 1

Explanation:

u = 0 m/s

a = 2 m/s^2

t = 2 s

v = u + at

v = 2 × 2 = 4 m/s

Kinetic Energy = 1/2 × m × v^2

= 1/2 × 5 × 16

= 40 joules.

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