Question # 1

Action and Reaction are always on:

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Same body

Different bodies

Any body

None of these

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

Rolling friction is___________ then sliding friction :

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Greter

Less

Some

Half

Formula of weight is derived from which law?

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First law

Second law

Third law

Law of conservation of momentum

Relation between force and momentum is:

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ΔP/F

ΔP/t

ΔPF

None

Which of the following is unit of momentum?

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Nm

Kgms^-2

Ns

Ns^-1

Centripetal acceleration of a body is given by formula:

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a_c=v/r

a_c=mv²/r

a_c=v/r²

a_c=v2/r

The unit of momentum is :

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kgms^-1

kgms^-2

m sec

None

The unit of π is:

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N

m

s

None

The unit of momentum is:

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kgms^-2

kgms^-1

Ns^-1

None of these

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

What is the effect of lubricicantion?

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Increase friction

No effect

Reduce friction

None

The maximum value of friction is:

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Kinetic friction

Static friction

Limiting friction

Dynamic friction

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

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