Two bodies of masses ‘m’ and ‘2m’ are moving with velocities of ‘2v’ and ‘v’ respectively. calculate the ratio of theIRR (i) momentum (ii) inertia.

 (i) Inertia – Inertia depends on mass, And since the mass of the two body is the same, therefore their inertia will be in the ratio of 1 : 1

(ii) Momentum – p=mv From, above we see momentum is directly proportional to mass and velocity. Since mass is equal, in this case velocity with determine the ratio of momentum. Velocity of body A=v

Velocity of body B=2v So.

its ratio = 1 : 2

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