Question # 1

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

A force applied on a body produces acceleration in

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Opposite direction

perpendicular direction

Its own direction

In any direction

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

When speed of a body is doubled then its

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K.E. is doubled

P.E. is doubled

Acceleration of doubled

Momentum is doubled

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

If the initial velocity of a projectile becomes doubled, the time of fight will be.

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Same

4 times

Double

3 times

Inertia may expressed in

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Kg

Newton

Watt

Joule

Height of projectile is maximum at an angle of.

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45^o

60^o

30^o

90^o

A force of 20 N acts along x axis, tis component is.

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0 N

10 N

20 N

30 N

An object of mass 1 kg moving with acceleration 0 1 ms-2 will experience a force of.

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10^-2 N

10^-3 N

1 N

1 dyne

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

When average velocity becomes equal to instantaneous than body is called moving with.

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Instantaneous acceleration

Constant acceleration

Constant velocity

Variable velocity

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

A man of 5000 kg moves with an acceralation of 1 ms-2 force acting on it is.

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5 N

500 N

50 N

5000 N

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