Question # 1

The centripetal acceleration is always along.

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Normal force

Centripetal forces

Mass

Horizental forces

The force which keeps a body to move in a circle is called

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Gravitational force

Centripetal force

Centrifugal force

Rotational force

Which types of friction of maximum

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Sliding

Rolling

Both a and b

None

The unit of momentum is:

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kgms^-2

kgms^-1

Ns^-1

None of these

If the force of 25 N is acting along the string to balance the weight then tension in string is

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25 N

50 N

Zero

None

Co-efficient of friction between iron and iron is:

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1.0

0.62

0.9

1.2

Formula of weight is derived from which law?

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First law

Second law

Third law

Law of conservation of momentum

What is the effect of lubricicantion?

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Increase friction

No effect

Reduce friction

None

S.I unit of weight is:

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kg

m

N

K

In circular motion, the motion of every particle of body is.

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Direction

Opposite

Same

None of these

Rocket works on principle of ______________

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Action Reaction

Law of inertia

Mass energy

Nil

Sliding friction can be changed into rolling friction by using:

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Ball bearing

Roller bearing

Both a and b

None of these

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

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

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