Laws of Motion (AIIMS Physics): Questions 14 - 17 of 17

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Question number: 14

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A bullet of mass 150 g and moving with velocity v is fired into a block of mass 1.8 kg and stick to it. The final velocity would be

Choices

Choice (4) Response

a.

13v

b.

15v

c.

v13

d.

v15

Question number: 15

» Laws of Motion » Impulse

MCQ▾

Question

In the figure given below, the position – time graph of a particle of mass 0.5 kg is shown. The impulse at t = 3 sec is –

A graph of position v/s time

A Graph of Position v/s Time

In figure the position verses time graph of a particle is shown.

Choices

Choice (4) Response

a.

2kgms1

b.

0.5kgms1

c.

2kgms1

d.

0.5kgms1

Question number: 16

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

Question

A gun of weight of 15 kg fires a shot of 0.5 g with a velocity 240ms . Velocity of recoil gun is: -

Choices

Choice (4) Response

a.

1.4cms

b.

1.2cms

c.

2.0cms

d.

1.6cms

Question number: 17

» Laws of Motion » Force and Inertia

MCQ▾

Question

A box is put on a scale which is adjusted to read zero, when the box is empty. A stream of pebbles is then poured into the base from a height 20m above its bottom at a rate of 5 pebbles per second. Each pebble has a mass 10g. If the pebbles collide with the box such that they immediately come to rest after collision, then the scale reading at time 5sec after the pebbles begin to fill the box is – (Takeg=10ms2)

Choices

Choice (4) Response

a.

3.5N

b.

7N

c.

35N

d.

70N

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