Kinematics (NEET Physics): Questions 192 - 196 of 229

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Question number: 192

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

In the fig shown, the velocity of each particle at the end of 4 sec will be -

Two mases A and B on a pulley system

Two Mases a and B on a Pulley System

Understanding the velocity of each particle

Choices

Choice (4) Response
a.

0.218 m/s

b.

1.744 m/s

c.

0.872 m/s

d.

2.18 m/s

Question number: 193

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A body of mass 2 kg strikes elastically with another body at rest and continues to move in the same direction with one fourth of its initial velocity. The mass of the other body is –

Choices

Choice (4) Response
a.

4 kg

b.

0.6 kg

c.

2.4 kg

d.

1.2 kg

Question number: 194

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A bullet of mass 0.01 kg travelling at a speed of 200 m/s strikes a block of mass 2 kg, which is suspended by a string of length 5 m. The center of gravity of the block is found to rise a vertical distance of 0.1 m The speed of the bullet after it emerges from the block will be -

Choices

Choice (4) Response
a.

1.4 m/s

b.

220 m/s

c.

20 m/s

d.

80 m/s

Question number: 195

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The mass of a rocket is 600 kg and the relative velocity of the gases ejecting from it is 250 m/s with respect to the rocket. The rate of burning of the fuel in order to give the rocket an initial acceleration 20 m/s 2 in the vertically upward direction (g = 10 m/s 2), will be –

Choices

Choice (4) Response
a.

10 kg/s

b.

60 kg/s

c.

72 kg/s

d.

30 kg/s

Question number: 196

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A 30 g bullet pierces through a plate of mass m 1 = 1 kg and then comes to rest inside a second plate of mass m 2 = 1.8 kg. It is found that the two plates, initially at rest, now move with equal velocities. The percentage loss in the initial velocity of bullet when it is between m 1 and m 2. (Neglect any loss of material of the bodies, due to action of bullet. ) will be -

Choices

Choice (4) Response
a.

25.67%

b.

46.45%

c.

39.525%

d.

35.33%

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