# Kinematics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 221 - 225 of 233

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## Question number: 221

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

### Question

The rate of burning of fuel in a rocket is 30 gm/sec. and comes out with and velocity 6 x 10 3 m/s. The force exerted by gas on rocket will be –

### Choices

Choice (4) Response

a.

200 N

b.

300 N

c.

180 N

d.

2.5 x l0 6 N

## Question number: 222

» Kinematics » Uniformly Accelerated Motion

MCQ▾

### Question

Consider the double Atwood’s machine as shown in the figure. What is acceleration of the masses?

### Choices

Choice (4) Response

a.

g/3

b.

g/4

c.

g

d.

g/2

## Question number: 223

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

### Question

A body of mass 10 kg moving with a velocity of 5 m/s, rebounds on a wall with same velocity. The impulse on the body is -

### Choices

Choice (4) Response

a.

100 Ns

b.

30 Ns

c.

120 Ns

d.

60 Ns

## Question number: 224

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

### Question

A cricket ball of mass 100 g is moving with a velocity of 10m/sec and is hit by a bat so that the ball is turned back with a velocity of 20 m/sec; the force on the ball acts for 0.01 sec, then the average force exerted by the bat on the ball will be

### Choices

Choice (4) Response

a.

480 N

b.

40 N

c.

200 N

d.

48 N

## Question number: 225

» Kinematics » Uniformly Accelerated Motion

MCQ▾

### Question

Two blocks of masses 5 kg and 3 kg connected by a rope of mass 2 kg are resting on frictionless floor. If a constant force of 40 N is applied to 6 kg block, tension in the rope at A, B, and C will respectively be –

### Choices

Choice (4) Response

a.

30N, 25N, 20N

b.

28N, 24N, 20N

c.

25N, 30N, 20N

d.

30N, 20N, 25N

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