Laws of Motion (BITSAT Physics): Questions 1 - 4 of 12

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Question number: 1

» Laws of Motion » Laws of Friction

MCQ▾

Question

If the coefficient of friction of a plane inclined at 30° is 0.4 , then acceleration of a body sliding freely on it is (g=9.8ms2)

Choices

Choice (4) Response

a.

2.54ms2

b.

9.8ms2

c.

1.51ms2

d.

4.9ms2

Question number: 2

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

If n small balls, each of mass m impringe elastically each second on a surface with a velocity u , then the force experienced by the surface in one second will be –

Choices

Choice (4) Response

a.

0.5mnu

b.

4mnu

c.

2mnu

d.

1mnu

Question number: 3

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A body of mass 10kg and velocity 10ms collides with a stationary body of mass 5kg . After collision both bodies stick to each other, velocity of the bodies after collision will be –

Choices

Choice (4) Response

a.

310ms

b.

920ms

c.

183ms

d.

203ms

Question number: 4

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A particle is projected with 200ms at an angle 60° . At the highest point, it explodes into three particles of equal masses. One goes vertically upwards with velocity 100ms , second particle goes vertically downwards. Then the velocity of the third particle will be –

Choices

Choice (4) Response

a.

200mswith30oangle

b.

120mswith60oangle

c.

200ms

d.

300ms

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