Question # 1

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

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

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

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

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

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Uniform

Variable

Instantaneous

None of these

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

The velocity of a projectile is maximum

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At the highest point

At point of launching and just before striking the ground

At half of the height

After striking the ground

If the slope of the velocity time graph remain constant then body is moving with.

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Uniform velocity

Negative variable acceleration

Variable acceleration

Uniform acceleration

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

The angle of projection for which its maximum height and horizontal range are equal

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46 ^o

56^o

66^o

76^o

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

the shortest distance between two points is called.

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Speed

Acceleration

Distance

Displacement

The dimensional unit of impulse is.

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[MLT]

[MLT-1]

[ML-1T-1]

[M-1L-1T-1]

Inertia may expressed in

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Kg

Newton

Watt

Joule

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

Food rich in proteins is:

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potato

grapes

vegetables

bread

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

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