Question # 1

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

If the mass of moving body in a circle is doubled then centripetal force wil be:

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Doubled

Half

4 times

Same

Walking on earth is the example of which law?

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First law

Second law

Third law

Law of momentum

The force_________oppose the motion of a moving object is called:

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Momentum

Friction

Power

Work

The amount of matter in a body is called:

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Velocity

Momentum

Mass

Force

A force of 20 N is acting on a body of mass 8 kg,Its acceleration will be

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2.5 ms-2

4.5 ms-2

5.5 ms-2

3.5 ms-2

If the object is at rest to T .............. W.

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=

=/

<

>

Waking on earth is the example of

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1st law of motion

Second law of motion

Third law of motion

Law of Momentum

Co-efficient of friction between iron and iron is:

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1.0

0.62

0.9

1.2

All divers need to wear seat belt because of effect of:

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Air resistance

Tensional

Push force

Gravitational

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

Centripetal force always acts _________ to the motion:

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Opposite

Parallel

Perpendicular

Upward

If radius of circle is doubled then centripetal acceleration becomes:

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Doubled

Three times

Four times

Half times

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Physics 9th Class English Medium Unit 3 Online Test MCQs With Answers

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