Question

2)a)Two objects A and B having masses 15 kg and 5 kg, moving with velocities 12 m/s and 10 m/s respectively. Compare the kinetic energies of both objects.​

Answer 1

A B

m1=15kg m=5kg

v=12 v=10

:.ke = 1/2mv^2

KEa/KEb=1/2mv^2 of a / 12mv^2 of b

=1/2×15×12×12 / 1/2×5×10×10

=432/100

=4.32

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