Laws of Motion-Momentum (NEET Physics): Questions 1 - 6 of 8

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Question number: 1

» Laws of Motion » Momentum

MCQ▾

Question

A force of 2 N is applied on a particle for 2 sec, the change in momentum will be -

Choices

Choice (4) Response

a.

6 Ns

b.

3 Ns

c.

4 Ns

d.

2 Ns

Question number: 2

» Laws of Motion » Momentum

Assertion-Reason▾

Assertion (Ꭺ)

The slope of momentum versus time graph! give us the acceleration.

Reason (Ꭱ)

Force is given by the rate of change on momentum.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 3

» Laws of Motion » Momentum

MCQ▾

Question

A force of 4 N is applied on a particle for 3 sec, the change in momentum will be -

Choices

Choice (4) Response

a.

4 Ns

b.

6 Ns

c.

12 Ns

d.

3 Ns

Question number: 4

» Laws of Motion » Momentum

MCQ▾

Question

A boat of mass 1000 kg is moving with a velocity of 5 m/s. A person of mass 60 kg jumps into the boat. The velocity of the boat with the person will be –

Choices

Choice (4) Response

a.

4.71 cm/s

b.

47.1 m/s

c.

4.71 m/s

d.

47.1 cm/s

Question number: 5

» Laws of Motion » Momentum

MCQ▾

Question

A boat of mass 100 kg is moving with a velocity of 5 m/s. A person of mass 50 kg jumps into the boat. The velocity of the boat with the person will be –

Choices

Choice (4) Response

a.

7.1 cm/s

b.

3.33 m/s

c.

3.71 cm/s

d.

4.48 m/s

Question number: 6

» Laws of Motion » Momentum

MCQ▾

Question

A particle of mass 3 kg is moving under the action of a central force whose potential energy is given by U (r) = 10r 3 joule. For what energy and angular momentum will the orbit be a circle of radius 10 m?

Choices

Choice (4) Response

a.

3.5 x 104 I, 2000 kgm 2 /sec

b.

2.5 x 103 I, 300 kgm 2 /sec

c.

2.5 x 104 J, 3000 kgm 2 /sec

d.

3.5 x 103 J, 300 kgm 2 /sec

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