Subtopic: Linear Momentum and Second Law of Motion
A 5 kg block is resting on a frictionless plane, it is struck by a Jet, releasing water at the rate of 4 kg/sec emerging with a speed of 5 m/sec. Calculate the initial acceleration of block :
4 m/sec²
3 m/sec²
5 m/sec²
8 m/sec²
Solution:
Force acting on the object is F = v.(dm/dt)= 5×4 = 20 N
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