Question # 1

A sugar bag of 1 kg has a momentum 25 kg m/s than its velocity is :

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v = 20 m/s

v = 25 kg

V = 25 m/s

v = 25 kg/ms-1

Which machine is used to find acceleration due to gravity?

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Centrifuge

Atwood machine

Hydraulic machine

Washing machine

The weight of a body of mass 20 kg is:

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2 N

10 N

20 N

200 N

To every action there is always an equal but __________ reaction:

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Same

Parallel

Opposite

Equal

Co-efficient of friction between iron and iron is:

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1.0

0.62

0.9

1.2

Which of the following material lowers friction when pushed between metal plates:

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Water

Fine marble poder

Air

Oil

________ is used to measure the force or weight of a body :

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Physical balance

Spring balance

A and B both

None

If radius of circle is doubled then centripetal acceleration becomes:

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Doubled

Three times

Four times

Half times

The velocity and acceleration of the body moving with uniform speed in a circular path will be:

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In same direction

In opposite direction

Mutually perpendicular

Equal

That force which produces an acceleration of one metre per second per second in a body of one kilogram mass is called

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1 joule

1 newton

1 watt

1 ampere

A mass of a body:

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Decreases when accelerated

Increases when accelerated

Decreases when moving with velocity

None of the above

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

Which types of friction is minimum?

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Sliding

Limiting

Rolling

None

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9th Class Physics Chapter 3 Dynamics English Medium KPK Boards Online Mcqs MCQs With Answers

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