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

The decrease in velocity per unit time is called

Question # 2

The path (or trajectory) described by a projectile is

Question # 3

Earth is considered to be

Question # 4

The motion of a body in a straight line is the motion in

Question # 5

If d is the displacement of the body in time t, then its average velocity will be

Question # 6

A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is

Question # 7

Acceleration of a body is negative if the velocity of the body is

Question # 8

A body of mass 5 kg is acted upon by a total change n momentum will be:

Question # 9

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 10

Two projectiles are fired from the same point with the same speed at angles of projection 60° and 30° respectively. Which one of the following is true?

Question # 11

The area under line velocity-time graph is numerically equal to the

Question # 12

The mass of the object is a quantities measure of its

Question # 13

Which one of the following is dimensionless:

Question # 14

Slope of velocity time graph represents:

Question # 15

Change in momentum is one second called.

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 For maximum linear distance of travel, a projectile must be fired at an angle of
A. 0°
B. 45°
C. 90°
D. 60°
2 A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns
3 The horizontal range of projectile, at a certain place, depends upon
A. the mass of the projectile
B. velocity of projection
C. angle of projection
D. angle as well as velocity of projection
4 The second law gives the relationship between
A. mass and velocity
B. force and acceleration
C. velocity and acceleration
D. mass and weight
5 Which one of the following is dimensionless:
A. Acceleration
B. Velocity
C. Density
D. Angle
6 Laws of motion are not valid in a system which is
A. inertial
B. non-interial
C. at rest
D. moving with uniform velocity
7 Biomass includes:
A. Crop residue
B. Natural vegetation
C. Animal dung
D. All of these
8 Change in momentum is one second called.
A. Impulse
B. Force
C. Energy
D. Work
9 The time of flight of a projectile motion equal to
A. half of the time to reach maximum height
B. twice the time to reach maximum height
C. one fourth of time to reach maximum height
D. time to reach maximum height
10 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these

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