Kinematics (NEET Physics): Questions 202 - 205 of 229

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Question number: 202

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A bullet of mass 10 g travelling horizontally with a velocity of 300 m/s strikes a

block of wood of mass 290 g which rests on a rough horizontal floor. After impact the block and the bullet move together and come to rest when the block has travelled a distance of 15 m. The coefficient of friction between the block and the floor will be - (Duration of impact is very short)

Choices

Choice (4) Response

a.

½

b.

2/3

c.

¾

d.

1/3

Question number: 203

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

A rifle man, who together with his rifle has a mass of 100 kg, stands on a smooth surface fires 10 shots horizontally. Each bullet has a mass 10 gm and a muzzle velocity of 800 m/s. What velocity does rifle man acquire at the end of 10 shots?

Choices

Choice (4) Response

a.

0.3 m/s

b.

1.2 m/s

c.

0.5 m/s

d.

0.8 m/s

Question number: 204

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

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

 Finding the velocity of the particle at the end of string

Finding the Velocity of the Particle at the End of String

Calculating the velocity of the particle

Choices

Choice (4) Response

a.

2.18 m/s

b.

0.872 m/s

c.

0.218 m/s

d.

8.72 m/s

Question number: 205

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

The mass of a rocket is 500 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.

45 kg/s

b.

10 kg/s

c.

60 kg/s

d.

30 kg/s

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