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 body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 2

A dirty carpet is to be cleaned by heating. This is in according with______law of motion.

Question # 3

A projectile on its path gets divided into two pieces at its highest point. Which is true?

Question # 4

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

Question # 5

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

Question # 6

Change in momentum is one second called.

Question # 7

A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when

Question # 8

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

Question # 9

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 10

The short distance between two points direction from its initial point to final point is called:

Question # 11

Laws of motion are not valid in a system which is

Question # 12

An inertial frame of reference is that frame of reference in which

Question # 13

When a body is moving on a surface, the force of friction is called

Question # 14

The SI units of momentum is

Question # 15

When body moves with increasing acceleration, its velocity time graph is a

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is
A. 120 x 10.8 N
B. 180 N
C. 720 N
D. 360 N
2 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
3 The projectile motion is composed of
A. horizontal motion only
B. vertical motion only
C. horizontal and vertical motion
D. none of them
4 Bodies which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
5 If the instantaneous velocity of a body does not change. the body is said to be moving with
A. average velocity
B. uniform velocity
C. instantaneous velocity
D. variable velocity
6 During the upward motion of the projectile, the vertical component of velocity.
A. Decreases
B. Increases
C. Remains constant
D. None of these
7 A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?
A. 4.2 m
B. 8.4 m
C. 12.6 m
D. none of these
8 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
9 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
10 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line

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