Question # 1

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

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Double

Half

One fourth

Constant

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

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

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Zero

Equal to gravity

Maximum

Constant

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

An athlete runs with a speed of 12 ms-1. Determine the longest jump he can undertake.

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12 m

14.4 m

24 m

16.2 m

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

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

For a rocket , the change in momentum per second of the ejecting gases is equal.

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Acceleration of the rocket

Momentum of rocket

Velocity of rocket

Thrust acting on rocket

The horizontal range of a projectile of 30^owith horizontal is same at an angle.

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40^o

45^o

90^o

60^o

The motion and rest are

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Absolute

Relative

Mutual

All of these

Unit of acceleration is

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ms-1

ms

ms-2

m2s

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

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0 N

10 N

20 N

30 N

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 area between velocity time graph and the time axis is numerically equal to.

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?Speed of object

Distance covered by the object

Average velocity of the object

Acceleration of the object.

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

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Instantaneous acceleration

Constant acceleration

Constant velocity

Variable velocity

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

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