Question # 1

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

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

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Double

Half

One fourth

Constant

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

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

Food rich in proteins is:

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potato

grapes

vegetables

bread

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 ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

A bullet shot straight up, return to its starting point in 10 sec. Its initial speed was

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9.8 ms-1

24.5 ms-1

49 ms-1

98 ms-1

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

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

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

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

Horizontal range is maximum when the angle of projectile is.

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0 o

30 o

45 o

60 o

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

When the body moves with constant acceleration the velocity time graph is

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Parabola

Hyperbola

Straight line

Curve

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Physics Fsc Part 1 Chapter 3 Online Test MCQs With Answers

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