Question # 1

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

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10 m/sec²

20 m/sec²

30 m/sec²

Zero

One KWh is equal to:

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3.6 x 10²J

3.6 KJ

3.6 x 10¹KJ

3.6 MJ

The second law gives the relationship between

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mass and velocity

force and acceleration

velocity and acceleration

mass and weight

Rate of change of momentum is called

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Impulse

Force

Torque

Momentum

The path described by a projectile is called its

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orbit

trajectory

range

distance

A train of 150 m length is going towards north direction at a speed of 10 ms^-1. A parrot files at a speed of 5 ms^-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

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12 s

8 s

15 s

10 s

Bodies failing freely under gravity provide good example of motion under

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non-uniform acceleration

uniform acceleration

variable acceleration

increasing acceleration

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

Velocity of a body changes if

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direction of the body changes

speed of the body changes

neither speed nor direction changes

either speed or direction changes

The mass of the object is a quantities measure of its

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speed

velocity

acceleration

inertia

The velocity of a body at any instant of its motion is known as

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average velocity

instantaneous velocity

uniform velocity

none of them

A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be:

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10 m/sec2

20 m/sec2

30 m/sec2

Zero

If the instantaneous velocity of a body does not change. the body is said to be moving with

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average velocity

uniform velocity

instantaneous velocity

variable velocity

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

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First

Second

Third

None of these

During the projectile motion, the horizontal component of velocity

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changes with time

remains constant

becomes zero

decreases with time

The path followed by the projectile is known as:

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Cycle

Hyperbola

Trajectory

Route

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Physics ECAT Pre Engineering Chapter 3 Motion and Force Online Test MCQs With Answers

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