Question # 1

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 ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

At what speed the momentum and kinetic energy of a body having the same.

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1 ms-1

2 ms-1

4 ms-1

8 ms-1

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

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

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Upward

Down ward

Zero

Horizontal

Inertia may expressed in

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Kg

Newton

Watt

Joule

Horizontal range is maximum when the angle of projectile is.

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0 o

30 o

45 o

60 o

A typical rocket consumes fuel about

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40000 Kgs-1

30000 Kgs-1

20000 Kg s-1

10000 Kgs-1

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

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

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 action and reaction never act on

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Same body

Two bodies

many bodies

All of these

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

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

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

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Uniform

Variable

Instantaneous

None of these

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

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Zero

Equal to gravity

Maximum

Constant

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