Question

An object of mass 28kg is moving with a uniform velocity of 4m/s. Find its kinetic energy ?​

Answer 1

Answer:

We know that kinetic energy =

2

mv

2

So kinetic energy of given object = 120 J

Solve any question of Work, Energy and Power

Answer 2

Velocity (v) = 4ms-1. Kinetic energy = 120 J. ∴ Mass(m) = 2 × K i n e t i c E n e r g y v 2 = 2 × 120 16 = 15 Kg. Hence the mass of the object is 15 Kg.

So

Mass- 15 kg

Kinetic energy -120 Joules

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