1.

Find the momentum of a body of mass100g have kinetic energy 20 j

Answer»

Mass = 100g = 0.1kg


K.E. = ½(m)(v²)

20 = ½(0.1)(v²)

v² = 400

v = 20m/s


Momentum = mv

P = (0.1)(20)

P = 2 kg.m/s



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