MHT CET 2023 12th May Morning Shift | Center of Mass and Collision Question 2 | Physics

A particle of mass '$$m$$' moving east ward with a speed '$$v$$' collides with another particle of same mass moving north-ward with same speed '$$v$$'. The two particles coalesce after collision. The new particle of mass '$$2 \mathrm{~m}$$' will move in north east direction with a speed (in $$\mathrm{m} / \mathrm{s}$$ )

$$\mathrm{V}$$

$$2 \mathrm{~V}$$

$$\frac{\mathrm{V}}{2}$$

$$\frac{\mathrm{V}}{\sqrt{2}}$$

MHT CET 2023 11th May Evening Shift

MCQ (Single Correct Answer)

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A ball kept at $$20 \mathrm{~m}$$ height falls freely in vertically downward direction and hits the ground. The coefficient of restitution is 0.4. Velocity of the ball first rebound is $$\left[\mathrm{g}=10 \mathrm{~ms}^{-2}\right]$$

$$4 \mathrm{~ms}^{-1}$$

$$8 \mathrm{~ms}^{-1}$$

$$12 \mathrm{~ms}^{-1}$$

$$16 \mathrm{~ms}^{-1}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

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A mass '$$\mathrm{M}$$' moving with velocity '$$\mathrm{V}$$' along $$\mathrm{X}$$-axis collides and sticks to another mass $$2 \mathrm{M}$$ which is moving along $$\mathrm{Y}$$-axis with velocity '$$3 \mathrm{~V}$$'. The velocity of the combination after collision is

$$\frac{V}{3} \hat{i}+2 V \hat{j}$$

$$\frac{V}{2} \hat{i}+V \hat{j}$$

$$\frac{V}{3} \hat{i}-2 V \hat{j}$$

$$\frac{V}{2} \hat{i}-V \hat{j}$$

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

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Consider the following statements $$\mathrm{A}$$ and $$\mathrm{B}$$. Identify the correct choice in the given answers.

A. In an inelastic collision, there is no loss in kinetic energy during collision.

B. During a collision, the linear momentum of the entire system of particles is conserved if there is no external force acting on the system.

Both $$\mathrm{A}$$ and $$\mathrm{B}$$ are wrong.

Both A and B are correct.

$$\mathrm{A}$$ is wrong and $$\mathrm{B}$$ is correct.

A is correct and B is wrong.

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