ECAT Pre General Science Physics Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 3 Motion and Force

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ECAT Pre General Science Physics Chapter 3 Motion and Force

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Question # 1

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

Question # 2

The linear momentum of the body is defined as

Question # 3

Swimming is based on the principle of

Question # 4

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 5

A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?

Question # 6

A rocket carries its own fuel in the form of

Question # 7

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 8

In above figures, tell which set of graphs shows that a body is moving with uniform velocity:

Question # 9

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 # 10

The consumption source if energy is:

Question # 11

Which quantity has the same units as impulse

Question # 12

In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is

Question # 13

The path described by a projectile is called its

Question # 14

The time rate of change of displacement is called:

Question # 15

During the upward motion of the projectile, the vertical component of velocity.

Question # 16

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 # 17

Work done along a closed path in a gravitational force is:

Question # 18

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

Question # 19

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

Question # 20

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

Question # 21

Earth is considered to be

Question # 22

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

Question # 23

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 24

During the upward motion of the projectile, the vertical component of velocity:

Question # 25

A non-inertial frame of reference is that frame of reference in which

Question # 26

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 27

The direction of the linear momentum is the direction of

Question # 28

Essential characteristic of equilibrium is

Question # 29

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

Question # 30

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

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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
2 Change in momentum is one second is called:
A. Impulse
B. Force
C. Energy
D. Work
3 The discuss used by athlete has a mass of 1 kg, its weight in newton is
A. 9.8 N
B. 80 N
C. 98 N
D. 100 N
4 Laws of motion are not valid in a system which is
A. inertial
B. non-interial
C. at rest
D. moving with uniform velocity
5 The horizontal component of a projectile moving with initial velocity of 500 ms-1at an angle 60° to x-axis is
A. 500 ms-1
B. 1000 ms-1
C. 250 ms-1
D. Zero
6 The second law gives the relationship between
A. mass and velocity
B. force and acceleration
C. velocity and acceleration
D. mass and weight
7 The path (or trajectory) described by a projectile is
A. a parabola
B. a hyperbola
C. a circle
D. a straight line
8 A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when
A. Elevator is stationary
B. Elevator cable breaks and it falls freely towards earth
C. Elevator accelerates downwards
D. Elevator accelerates upward
9 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
10 A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?
A. 0.1 m/s
B. 10 m/s
C. 1 m/s
D. 0.01 m/s

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