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

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

Question # 2

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 # 3

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

Question # 4

One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:

Question # 5

When a horse pulls a cart, the force that makes the horse run forward is the force exerted by

Question # 6

A projectile on its path gets divided into two pieces at its highest point. Which is true?

Question # 7

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

Question # 8

Force is a:

Question # 9

Laws of motion are not valid in a system which is

Question # 10

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

Question # 11

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

Question # 12

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

Question # 13

Which of the following statements for an object in equilibrium is not true?

Question # 14

The product of force and time is called change in:

Question # 15

Which one of the following is dimensionless.

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be
A. 20 ms-2
B. 10 ms-2
C. 2 ms-2
D. 1 ms-2
2 Bodies failing freely under gravity provide good example of motion under
A. non-uniform acceleration
B. uniform acceleration
C. variable acceleration
D. increasing acceleration
3 In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is
A. Mg
B. 1/2 Mg
C. Zero
D. 2 Mg
4 The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to
A. zero
B. maximum
C. minimum
D. infinity
5 If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine, is (Take g=9.8 m/s2)
A. 9.8 m/s
B. 19.6 m/s
C. 39.2 m/s
D. 98.0 m/s
6 For a moving body, at any instant of time
A. If the body is not moving the acceleration is necessarily zero
B. If the body is slowing, the retardation is negative
C. If the body is slowing, the distance is negative
D. If displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future
7 During the projectile motion, the horizontal component of velocity
A. changes with time
B. remains constant
C. becomes zero
D. decreases with time
8 For a fixed force, larger is the mass of a body the
A. greater is its acceleration
B. smaller is its acceleration
C. smaller is its weight
D. zero is its acceleration
9 A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is
A. 17 m/s
B. 33 m/s
C. 17.5 m/s
D. none
10 A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds
A. 25 m
B. 20 m
C. 50 m
D. 9.8 m

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