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

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 2

Bodies failing freely under gravity provide good example of motion under

Question # 3

Graphs which are used to illustrate the variation of velocity of an object with time are called

Question # 4

Distance covered by a freely failing body n the first second of its motion will be:

Question # 5

Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is

Question # 6

Body which falls freely under gravity provides good example of motion under:

Question # 7

A rocket carries its own fuel in the form of

Question # 8

During the upward motion of the projectile, the vertical component of velocity.

Question # 9

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Question # 10

The three equation of motions are useful only for

Question # 11

The entity which measures the quantity of motion in a body is called

Question # 12

Swimming becomes possible because of______law of motion.

Question # 13

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s2

Question # 14

The effect of applying a force on a moving body is to change

Question # 15

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A body whose momentum is constant must have constant
A. Acceleration
B. Velocity
C. Force
D. None of these
2 The vertical component of velocity of a projectile during its motion is minimum
A. at the time of projection
B. at the highest point
C. just before hitting the plane of projection
D. all of them
3 The velocity of a projectile is maximum
A. at the point of projection
B. just before striking the ground
C. at none of them
D. at both of them
4 The entity which measures the quantity of motion in a body is called
A. force
B. energy
C. momentum
D. power
5 The direction of the acceleration is the same as that of
A. speed
B. velocity
C. both of them
D. none of them
6 For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to
A. Four times
B. Thrice
C. Once
D. Twice
7 The mass of the object is a quantities measure of its
A. speed
B. velocity
C. acceleration
D. inertia
8 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
9 When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.
A. Becomes half
B. Becomes zero
C. Ramains same
D. Becomes double
10 A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time
A. 6 s
B. 36 s
C. 38 s
D. None of these

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