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

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

Question # 2

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

Question # 3

A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion:

Question # 4

A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2)

Question # 5

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 6

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

Question # 7

When a bicycle is in motion, the frictional forces exerted by the ground are

Question # 8

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 9

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 # 10

The projectile motion is composed of

Question # 11

Blomass includes:

Question # 12

The dimension of linear inertia is:

Question # 13

If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is

Question # 14

When we consider the average velocity of a body, then the body is moving in

Question # 15

When brakes are applied to a fast moving car, the passenger will be thrown:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 The quantity F x t is called as
A. momentum
B. velocity
C. acceleration
D. impulse
2 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
A. 2100 m/s2
B. 1400 m/s2
C. 700 m/s2
D. 400 m/s2
3 A rocket carries its own fuel in the form of
A. liquid only
B. liquid or solid
C. liquid and solid
D. liquid or solid and oxygen
4 The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?
A. 400 m
B. 300 m
C. 200 m
D. 100 m
5 A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be:
A. 10 m/sec2
B. 20 m/sec2
C. 30 m/sec2
D. Zero
6 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
7 Work done along a closed path in a gravitational field is:
A. Maximum
B. Minimum
C. Zero
D. Unity
8 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
A. 4 : 5
B. 7 : 9
C. 16 : 25
D. 1 : 1
9 When the total displacement is divided by total time taken, we get:
A. Velocity
B. Average speed
C. Average velocity
D. None of these
10 The short distance between two points direction from its initial point to final point is called:
A. Velocity
B. Displacement
C. Speed
D. Distance

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