Question # 1

1 Newton =_________

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1 kg ms^-2

1 kg ms

1 kg m^-1s^-2

1 kg^-1m^-1 s^-1

Friction is caused by :

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Shining surface

Rough surface

Polished surface

Nil

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

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=

=/

<

>

Formula of weight is derived from which law?

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First law

Second law

Third law

Law of conservation of momentum

The study of motion without reference to mass and force.

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Mechanics

Dynamics

Kinematics

None of these

What is unit of momentum?

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Kg m/s

m

c

Nil

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

S.I unit of force is:

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N

Ns

s

None

The unit of π is:

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N

m

s

None

Kgms^-2 is equal to:

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Joule

Mole

Newton

Watt

The momentum of two or more than two bodies intersacting remain constant in:

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Law of inertia

Isolated system

System

None

S.I unit of weight is:

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kg

m

N

K

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

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