ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

Question # 2

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

Question # 3

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

Question # 4

Earth is considered to be

Question # 5

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

Question # 6

Acceleration produced in a body by a force varies

Question # 7

Change in momentum is one second called.

Question # 8

Which one of the following is dimensionless:

Question # 9

The motion of a projectile is

Question # 10

The magnitude of the displacement is a line from initial position to final position which is

Question # 11

A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after

Question # 12

Newton published laws of motion in his famous book "principia" in

Question # 13

When brakes are applied to a fast moving car, the passengers will be thrown:

Question # 14

Slope of velocity time graph represents:

Question # 15

The time of flight of a projectile motion equal to

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Newton's laws are adequate for speeds that are
A. low compared with the speed of light
B. equal to the speed of light
C. greater than the speed of light
D. all of them
2 A ball is dropped vertically down and it takes time t to reach the ground. At time t/2
A. The ball had covered exactly half the distance
B. The velocity of the ball was V/3 where V is the velocity when it reached the ground
C. The ball had covered less than half the distance
D. The ball had covered more than half the distance
3 Inertia mass and gravitational mass are
A. opposite
B. identical
C. identical when there is no friction
D. all of them
4 A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:
A. First
B. Second
C. Third
D. None of these
5 A 5 kg mass is falling freely, the force acting on, it will be
A. 19.6 N
B. 9.8 N
C. 5 N
D. Zero
6 The linear momentum of the body is defined as
A. p=ma
B. p=1/2ma
C. p=mv
D. p=1/2mv
7 Graphs which are used to illustrate the variation of velocity of an object with time are called
A. distance time graphs
B. speed time graphs
C. velocity time graphs
D. acceleration time graphs
8 Slope of velocity time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
9 Swimming is based on the principle of
A. Newton's 1st law
B. Newton's 2nd law
C. Newton's 3rd law
D. All
10 Distance covered by a freely failing body n the first second of its motion will be:
A. 4.9 m
B. 9.8 m
C. 19.6 m
D. 29.4 m

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