Question

Two objects A and B of masses 2m and 3m have velocities 3v and v respectively. Find out the ratio of (i) their inertia (ii) their momentum and (iii) force required to stop them in same time.
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Answer 1

Answer:

i) 2:3

ii) 2:1

iii) 2:1

Explanation:

i) ratio of their inertia = ratio of their masses

ii) ratio of their momenta = m1v1:m2v2

iii) ratio of their forces= ratio of rate of change in momenta

since the time required is equal,

ratio of their forces = ratio of rate of change in momenta