Question

answer In 50 words motion chap​

Answer 1

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(i) Since, the mass of B is more, inertia of B will be more.

(ii) Momentum is p = mv

Thus, for A, pA = m�2V = 2mV

And, for B, pB = 2m�V = 2mV

Thus, momentum for both is same.

(iii) According to Newton’s second law, force is rate of change of momentum.

Since, we have to stop both the masses, their final momenta is zero.

Thus, force for both masses to stop in same time will be same.

F = dp/dt = 2mV/dt

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Answer 2

$\huge \orange{ \overbrace{ \red{\underbrace \color{blue} {\underbrace \color{black}{\colorbox{lime}{ {\red \: {☘Good\:Night ☘ }}}}}}}}$

(i) Since, the mass of B is more, inertia of B will be more.

(ii) Momentum is p = mv

Thus, for A, pA = m�2V = 2mV

And, for B, pB = 2m�V = 2mV

Thus, momentum for both is same.

(iii) According to Newton’s second law, force is rate of change of momentum.

Since, we have to stop both the masses, their final momenta is zero.

Thus, force for both masses to stop in same time will be same.

F = dp/dt = 2mV/dt

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