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

Question # 1

The unit of coefficient of friction .

Choose an answer

Newton

ms^-1

ms^-2

No unit

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Question # 2

Inertia depends upon:

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Weight

Mass

Density

Force

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Question # 3

Acceleration is produced by 20 N force it is due to:

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Inertia

Force

Momentum

None

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Question # 4

The amount of matter in a body is called:

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Velocity

Momentum

Mass

Force

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Question # 5

The momentum of two or more than two bodies intersacting remain constant in:

Choose an answer

Law of inertia

Isolated system

System

None

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Question # 6

The static fraction between wood and lather is _______________

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0.6

0.7

0.9

0.8

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Question # 7

When a force of 4 Newton is applied on a body of mass 2 kg, the acceleration produced in it will be:

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2 ms^-2

4 ms^-2

8 ms^-2

6 ms^-2

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Question # 8

The acceleration produced in a moving body is always in the direction of applied

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Velocity

Force

Speed

Momentum

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Question # 9

Which parameter remain same every where?

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Force

Mass

Weight

Velocity

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Question # 10

The formula to determine the centripetal force is:

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mv²/r

Ns^-1

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Question # 11

What is unit of momentum?

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Kg m/s

Nil

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Question # 12

A boy jumps out of a moving bus. There is danger for him to fall

Choose an answer

Towards the moving bus

In the direction of motion

away from the bus

Opposite to the direction of motion

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