#5 | Conservation of Momentum

(Physics) > Systems of Particles and Rotational Motion

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Related Practice Questions :

A block of mass m moving at a velocity v collides with another block of mass 2m at rest. The lighter block comes to rest after collision. Find the coefficient of restitution.

(a) $\frac{1}{2}$ (b) $1$

(c) $\frac{1}{3}$ (d) $\frac{1}{4}$

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If the linear momentum is increased by 50%, the kinetic energy will increase by

1. 50%

2. 100%

3. 125%

4. 25%

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A bullet of mass m and velocity v is fired into a block of mass M and sticks to it. The final velocity of the system equals

1. $\frac{\mathrm{M}}{\mathrm{m}+\mathrm{M}}.\mathrm{v}$

2. $\frac{m}{\mathrm{m}+\mathrm{M}}.\mathrm{v}$

3. $\frac{\mathrm{m}+\mathrm{M}}{m}.\mathrm{v}$

4. None of these

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If the kinetic energy of a body increases by 0.1%, the percent increase of its momentum will be

1. 0.05%

2. 0.1%

3. 1.0%

4. 10%

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A stationary bomb explodes into two parts of masses 3kg and 1kg. The total KE of the two parts after explosion is 2400 J. The KE of smaller part is

1. 600 J

2. 1800 J

3. 1200 J

4. 2160 J

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