Question # 1

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

Which of the following is the unit of momentum?

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Nm

kgms^-2

Ns

Ns^-1

Outer edge of the curved road is elevated to prevent

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Circular motion

Centripetal force

Skidding

Protection

A ball of mass 1 kg moving with velocity 2 ms-1, Its momentum will be

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1 Ns

2 Ns

0.5 Ns

4 Ns

Which is unitless quantity:

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Mass

Force

Inertia

Momentum

In velocity the body become double , then centripetal force will be:

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Half

Three times greater

Double

Four times greater

If the velocity of moving body in circle is doubled, then its centripetal force is

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Double

Half

Four times

Remain

S.I unit of force is:

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N

Ns

s

None

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

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Air resistance

Tensional

Push force

Gravitational

The unit of momentum is :

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kgms^-1

kgms^-2

m sec

None

The machine which use unequal masses to find the value of "g" is ________

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Free fall apparatus

Atwood machine

Pulley

None

2nd law of motion is stated as:

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F=m/a

F=ma

F=a/m

F=ma²

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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