Question # 1

In matter, the Atoms are in a state of never ending

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Motion

Rest

Change

State of decline

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

A paratooper moves downward with

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Zero acceleration

Constant acceleration

Positive acceleration

Negative acceleration

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

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Upward

Down ward

Zero

Horizontal

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

Horizontal range is maximum when the angle of projectile is.

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0 o

30 o

45 o

60 o

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 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 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

Total change in momentum of an isolated system is

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Always (+) ve

Always (-) ve

Has maximum value

Zero

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

Inertia may expressed in

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Kg

Newton

Watt

Joule

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

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

A collision in which K.E. of the system is not conserved is

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Elastic collision

Inelastic collision

3rd low of motion

None of these

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

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