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

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 2

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

Question # 3

The distance covered by a body in unit time is called.

Question # 4

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 # 5

If a ball comes back to its starting point after bouncing off the wall several times, then its

Question # 6

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

Question # 7

When a shall explodes a mid-air, the total momentum of its fragments is

Question # 8

Change in momentum is one second is called:

Question # 9

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 10

The path described by a projectile is called its

Question # 11

The mass of the object is a quantities measure of its

Question # 12

In equation F=ma, then mass 'm' is

Question # 13

Tick the conservation force:

Question # 14

Acceleration in a body is always produced in the directin of:

Question # 15

A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 The collision in which KE is conserved but momentum is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. any these
D. None of these
3
Swimming becomes possible because of______law of motion:
A. First
B. Second
C. Third
D. None of these
4 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
5 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
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
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns
7 The effect of applying a force on a moving body is to change
A. its direction of motion only
B. its speed of motion only
C. both the direction and speed of motion
D. its inertia only
8 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
9 A boat of mass 40 kg is at rest, A dog of mass 4 kg moves in the boat with a velocity of 10 m/s. What is the velocity of boat?
A. 4 m/s
B. 2 m/s
C. 8 m/s
D. 1 m/s
10 A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain drops are falling vertically down. To the another man standing on ground the rain will appear
A. To fall vertically down
B. To fall at an angle going from west to east
C. To fall at an angle going from east to west
D. The information given is insufficient to decide the direction of rain

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