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 train cover 90 km in half an hour. the time taken by it to travel 15 km will be:

Question # 2

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

Question # 3

During the projectile motion, the horizontal component of velocity

Question # 4

What must be changing when a body is accelerating uniformly?

Question # 5

A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?

Question # 6

Which quantity has the same units as impulse

Question # 7

Root out of the conventional source of energy:

Question # 8

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?

Question # 9

Swimming becomes possible because of______law of motion.

Question # 10

For a fixed force, larger is the mass of a body the

Question # 11

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 # 12

The horizontal range of projectile, at a certain place, depends upon

Question # 13

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 # 14

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

Question # 15

The product of force and time is called change in:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If a ball comes back to its starting point after bouncing off the wall several times, then its
A. total displacement is zero
B. average velocity is zero
C. none of them
D. both of them
2 The velocity of a body at any instant of its motion is known as
A. average velocity
B. instantaneous velocity
C. uniform velocity
D. none of them
3 A ball is thrown upwards with a velocity of 100 m/s. It will reach the ground after
A. 10 s
B. 20 s
C. 5 s
D. 40 s
4 Which quantity has the same dimension as that of impulse?
A. KE
B. Power
C. Momentum
D. Work
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 When a force is applied on a body, several effects are possible Which of the following effect could not occur?
A. the body rotates
B. the body speeds up
C. the mass of the body decreases
D. the body changes its direction
7 The linear momentum of the body is defined as
A. p=ma
B. p=1/2ma
C. p=mv
D. p=1/2mv
8 A ball is dropped vertically down and it takes time t to reach the ground. At time t/2
A. The ball had covered exactly half the distance
B. The velocity of the ball was V/3 where V is the velocity when it reached the ground
C. The ball had covered less than half the distance
D. The ball had covered more than half the distance
9 Slope of velocity-time graph represents:
A. Acceleration
B. Speed
C. Torque
D. Work
10 A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is
A. m
B. 2 m
C. 4 m
D. Infinity

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