# Laws of Motion-Law of Conservation of Linear Momentum (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics): Questions 1 - 3 of 3

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## Question number: 1

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

### Question

Two balls m1 and m2 are moving in the straight line, approaching each other as shown. After collision these objects stick together. What will be the velocity (in m/s) of the combined object after collision?

### Choices

Choice (4) Response

a.

3.75

b.

5.454

c.

6.523

d.

4.375

## Question number: 2

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

### Question

A stationary U238 nucleus emits on α-particle (2He4) with velocity and kinetic energy 3.8 MeV. What is the velocity of the residual nucleus?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

### Question

A massless platform of hard paper is kept on a light elastic spring as figure shows. When a particle of mass 500 g is dropped on the platform from a height of 0.32 m, the particle strikes the platform and compresses the spring by 0.05 m. From what height the particle is dropped to get a compression of 0.08 m?

### Choices

Choice (4) Response

a.

0.78

b.

0.68

c.

0.86

d.

0.70

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