A boat of 20 kg , which initial velocity is 20 m/s and after travelling 100 metres And its final velocity is 30 m/s Then find out work done by the object?
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projectile of mass 50 kg is shot at an angle 30 degreewith an initial velocity of 100m/s . After 5 seconds it splits into two fragments, one of which having mass 20 kg, travels vertically up with a velocity
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