# Physics-Work, Energy & Power (NSTSE (National Science Talent Search Exam- Unified Council) Class 9): Questions 1 - 7 of 60

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## Question number: 1

» Physics » Work, Energy & Power

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### Question

The work done by a student in lifting a block from the ground and keeping it on a shelf of height is:

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 2

» Physics » Work, Energy & Power

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MCQ▾

### Question

A ball is projected vertically upward with a kinetic energy . If it goes up to a maximum height of , then the mass of the ball is approximately:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Physics » Work, Energy & Power

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### Question

Potential energy of a particle is , when it is at height from the ground. Then what is the mass of the particle?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 4

» Physics » Work, Energy & Power

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### Question

When a ball reaches the ground, its velocity is , from a height . What is the value of ?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 5

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### Question

The kinetic energy in terms of the momentum is given as:

### Choices

Choice (4) Response

a.

b.

c.

d.

None of the above

## Question number: 6

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MCQ▾

### Question

Two masses of and are moving with equal kinetic energies, then the ratio of magnitudes of their linear momenta is:

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 7

» Physics » Work, Energy & Power

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MCQ▾

### Question

Two blocks of masses and are dropped from a height . At any instant, which physical quantity they both have equal?

### Choices

Choice (4) Response

a.

Acceleration

b.

Momentum

c.

Kinetic energy

d.

Potential energy

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