Question

Two bodies A and B of same mass are moving with velocities v and 2v respectively. Compare (i) their inertia (ii) their momentum.

March 13, 2024

Answer

(i) If the mass of two bodies is the same their inertia will also be the same. Hence, the ratio of their inertia is 1 : 1.

(ii) momentum = mass × velocity

p_A : p_B = mv_A : mv_B

= v_A : v_B

= v : 2v

= 1:2

Hence, ratio between the momentum of A and B is 1 : 2

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