Question # 1

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

The mass of a body is quantitative measure of its

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Motion

Inertia

Weight

All of these

The action and reaction never act on

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Same body

Two bodies

many bodies

All of these

Change of momentum is equal to

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Force

Tension

Impulse

Pressure

In the absence of air resistance the acceleration of a body will be

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Uniform

Variable

Instantaneous

None of these

The time rate of change of momentum equals

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Weight

Applied force

Impulse

Mass

Unit of acceleration is

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ms-1

ms

ms-2

m2s

Slope of velocity time graph describes a physical quantity called.

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Displacement

Average velocity

Average acceleration

Momentum

the acceleration along x -axis direction in case of projectile is.

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Zero

Equal to gravity

Maximum

Constant

In the absence of external force, the change in momentum is.

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Zero

Constant

Decreasing

Increasing

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

when a ball is throng straight up, the acceleration at its highest point is.

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Upward

Down ward

Zero

Horizontal

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

A mass of 1 kg is freely falling. The force of gravity is.

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1 N

9.8 N

0.5 N

Zero

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

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

Inertia may expressed in

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Kg

Newton

Watt

Joule

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

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Maximum

Positive

Zero

Negative

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