Question # 1

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

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 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'

Distance covered by a freely falling body is 2 seconds will be

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9.8 m

19.6 m

44.4 m

49 m

If a mass of a body is doubled, then acceleration becomes.

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Double

Half

One fourth

Constant

10 N and 20 N are acting on a body of mass 2 kg the minimum acceleration will be.

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10 ms-2

20 ms-2

60 ms-2

5 ms-2

Unit of impulse is equivalent to that of.

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Force

Momentum

Acceleration

Velocity

The mass of a body is quantitative measure of its

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Motion

Inertia

Weight

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

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

If velocity time graph is parallel to time axis, then acceleration of moving body will be.

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Maximum

Positive

Zero

Negative

The velocity of a free falling body just before Hattin the ground is 9.8 ms-1, the height through which is fall be

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98 m

19.6 m

4.9 m

9.8 m

When velocity time graph is a straight line parallel to time axis then

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Velocity is zero

Acceleration is constant

Acceleration is zero

Velocity is variable

No body begins to move or comes to rest of itself was given by

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Newton

Pascal

Bernoulli

Bu Ali Sina

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

Total change in momentum of an isolated system is

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Always (+) ve

Always (-) ve

Has maximum value

Zero

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