Question # 1

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

Friction is due to

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Roughness

Shape

Smoothness

None

The mass of a body

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Decreases when accelerated

Increases when accelerated

Decreases when moving with high velocity

None of the above

Which types of friction of maximum

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Sliding

Rolling

Both a and b

None

In symbols, Newton's second law of motion is stated as

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F = m/a

F = ma

F = a/m

F = ma²

Formula of weight is derived from which law?

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First law

Second law

Third law

Law of conservation of momentum

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

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Physical balance

Spring balance

A and B both

None

The formula to determine the centripetal force is:

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Ms

mv²/r

Ns

Ns^-1

Newton related inertia of the body with its

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Weight

Mass

Density

Force

A body of mass 5 kg i moving with a velocity of 10 ms^-1. Find the force required to stop it in 2s.

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5 N

25 N

20 N

30 N

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

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Towards the moving bus

Away from the bus

In the direction of motion

Opposite to the direction of motion

The unit of momentum is:

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kgms^-2

kgms^-1

Ns^-1

None of these

The amount of matter in a body is called:

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Velocity

Momentum

Mass

Force

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

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