Question

A deer of mass 60kg running at 5m/s picks up a speed of 20m/s over a time interval of 4 sec calculate initial momentum final momentum and force devloped by it

Answer 1

Answer:

Initial momentum = mu = 60×5 = 300 kgm/s

Final momentum = mv = 60×20 = 1200 kgm/s

Force = ma

a = (v - u) /t = (20 - 5)/4 = 15/4

Force = 60×15/4 = 225 N

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