Question # 1

Friction causes _____________

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Heat

Light

Mass

Weight

The unit of π is:

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N

m

s

None

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

The amount of matter in a body is called:

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Velocity

Momentum

Mass

Force

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

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Air resistance

Tensional

Push force

Gravitational

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

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Physical balance

Spring balance

A and B both

None

Relation between force and momentum is:

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ΔP/F

ΔP/t

ΔPF

None

The formula to determine the centripetal force is:

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Ms

mv²/r

Ns

Ns^-1

Which parameter remain same every where?

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Force

Mass

Weight

Velocity

All forces are example of contract forces except:

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Air resistance

Tensional

Push force

Gravitational

If radius of circle is doubled then centripetal acceleration becomes:

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Doubled

Three times

Four times

Half times

Motion of the rocket is the example of which law?

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First law

Second law

Third law

Law of momentum

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

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