Question # 1

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

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Double

Half

One fourth

Constant

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

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

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Uniform

Variable

Instantaneous

None of these

Change of momentum is equal to

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Force

Tension

Impulse

Pressure

Unit of acceleration is

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ms-1

ms

ms-2

m2s

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

The horizontal component of velocity of projectile

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Increases

Decreases

Remain same

Decreases and then increases

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

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Zero

Equal to gravity

Maximum

Constant

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

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Maximum

Positive

Zero

Negative

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

Slope of velocity time graph describes a physical quantity called.

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Displacement

Average velocity

Average acceleration

Momentum

A ball is thrown up vertically, it takes 3 sec to reach maximum height. Its initial velocity is.

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10 ms-1

12.2 ms-1

15 ms-1

29.4 ms-1

When the car moves with an increasing acceleration then its velocity time graph is always

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Constant

Variable

A straight line

A curve

The mass of a body is quantitative measure of its

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Motion

Inertia

Weight

All of these

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

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

When the body moves with constant acceleration the velocity time graph is

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Parabola

Hyperbola

Straight line

Curve

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