# Laws of Motion (NEET Physics): Questions 14 - 18 of 116

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## Question number: 14

» 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: 15

» Laws of Motion » Force and Inertia

MCQ▾

### Question

A 5 kg balls is swing in a vertical circle at the end of a cord 1 m long. The maximum speed at which it can swing if the cord can sustain maximum tension of 150 N will be –

### Choices

Choice (4) Response

a.

64 m/s

b.

36.5 m/s

c.

3.18 m/s

d.

101 m/s

## Question number: 16

» 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: 17

» Laws of Motion » Force and Inertia

MCQ▾

### Question

The string of a pendulum is horizontal. The mass of the bob is m. Now the string is released. The tension in the string in the lowest position is –

### Choices

Choice (4) Response

a.

1 mg

b.

2 mg

c.

3 mg

d.

4 mg

## Question number: 18

» Laws of Motion » Force and Inertia

MCQ▾

### Question

A stone of mass 1 kg tied to a light inextensible string of length L = 10/6 m is whirling in a circular path of radius L in a vertical plane. If the ratio of the maximum tension in the string to the minimum tension in the suing is 4 and if g is taken to be 10m/sec 2, the speed of the stone at the highest point of the circle is

### Choices

Choice (4) Response

a.

m/sec

b.

20 m/sec

c.

7.07 m/sec

d.

m/sec

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