Question # 1

No body begins to move or comes to rest of itself was given by

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Newton

Pascal

Bernoulli

Bu Ali Sina

If the slope of a velocity time graph gradually decreases than body is said to be moving with

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Positive acceleration

Negative acceleration

Uniform velocity

None

The horizontal component of velocity of projectile

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Increases

Decreases

Remain same

Decreases and then increases

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

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

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Uniform

Variable

Instantaneous

None of these

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

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

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

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Zero

Constant

Decreasing

Increasing

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

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

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

Slope of velocity time graph describes a physical quantity called.

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Displacement

Average velocity

Average acceleration

Momentum

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

The velocity of a free falling body just before Hattin the ground is 9.8 ms-1, the height through which is fall be

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98 m

19.6 m

4.9 m

9.8 m

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 an object is quantitative measure 0 its

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Momentum

Acceleration

Inertia

Energy

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