Question # 1

Which of the following is not a projectile

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a bullet fired from a gun

a space ship

a football in air

an artillery shell

Flight of rocket in the space is an example of

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Newton's first law

Newton's third law

Newton's second law

all of them

The path followed by the projectile is known as:

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Cycle

Hyperbola

Trajectory

Route

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

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1.46 m sec^-1

2.44 m sec^-1

3.42 m sec^-1

4.43 m sec^-1

An object thrown in arbitrary direction in space with an initial velocity and moving freely under gravity will follow

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a circular path

a straight line

a hyperbola

a parabola

Distance covered by a freely falling body in 2 sec will be

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4.9 m

19.6 m

29.2 m

44.1 m

Force is a:

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Scalar quantity

Base quantity

Derived quantity

None of these

The decrease in velocity per unit time is called

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deceleration

acceleration

uniform acceleration

variable acceleration

The shortest distance between two points directed from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

In equation F=ma, then mass 'm' is

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rest mass

variable mass

inertial mass

gravitational mass

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

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3 N

4 N

5 N

6 N

The direction of the linear momentum is the direction of

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speed

velocity

weight

none of them

What must be changing when a body is accelerating uniformly?

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the force acting on a body

the velocity of the body

the mass of the body

the speed of the body

A change in position of a body from its initial position to its final position is known as

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relative motion

displacement

distance

acceleration

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be

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Unequal

Exactly equal

Roughly equal

Zero

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