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

Force is a:

Question # 2

A typical rocket consumes about

Question # 3

The motion in a plane is the motion in

Question # 4

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

Question # 5

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

Question # 6

For maximum linear distance of travel, a projectile must be fired at an angle of

Question # 7

Ethanol (alcohol) as a type of:

Question # 8

Distance covered by a freely falling body in 2 sec will be

Question # 9

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 # 10

The vertical and horizontal range will be equal id angle of projection is

Question # 11

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

Question # 12

When the surfaces are coated with a lubricant, then they

Question # 13

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

Question # 14

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

Question # 15

Swimming becomes possible because of______law of motion.

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
2 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
3 Newton published laws of motion in his famous book "principia" in
A. 1867
B. 1667
C. 1676
D. 1687
4 Unit of impulse in
A. Newton
B. Kg m
C. Kg m/s
D. Joule
5 A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of
A. 3 s
B. 5 s
C. 7 s
D. 9 s
6 Inertial frame of references are those frame of references which are moving with
A. increasing velocity
B. decreasing velocity
C. constant velocity
D. all of them
7 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3,6 x 101KJ
D. 3,6 MJ
8 Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be
A. 5 N
B. 10 N
C. 15 N
D. 20 N
9 The decrease in velocity per unit time is called
A. deceleration
B. acceleration
C. uniform acceleration
D. variable acceleration
10 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

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