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 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?

Question # 2

When the total displacement is divided by total time taken, we get:

Question # 3

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

Question # 4

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

Question # 5

A rocket carries its own fuel in the form of

Question # 6

Newton published laws of motion in his famous book "principia" in

Question # 7

The projectile attains maximum horizontal range when it is projected at an angle of

Question # 8

When a shell explodes in mid-air, its fragments fly off in

Question # 9

When a force is applied on a body, several effects are possible Which of the following effect could not occur?

Question # 10

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 # 11

When the surfaces are coated with a lubricant, then they

Question # 12

The mass of the object is a quantities measure of its

Question # 13

According to the law of conservation of linear momentum, the total linear momentum of an isolated system

Question # 14

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

Question # 15

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 If the acceleration of a body is negative, then slope of the velocity-time graph will be:
A. Zero
B. Positive
C. Negative
D. Infinity
2 An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is
A. 1200 m
B. 0.33 km
C. 3.33 km
D. 33 km
3 Acceleration of a body at any particular instant during its motion is known as
A. average acceleration
B. uniform acceleration
C. instantaneous acceleration
D. all of them
4 The decrease in velocity per unit time is called
A. deceleration
B. acceleration
C. uniform acceleration
D. variable acceleration
5 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
A. 24/13
B. 10/3
C. 3
D. 4,8
6 If the slope of the velocity-time graph increases at constant rate with time, then the body is said to have
A. uniform deceleration
B. uniform negative acceleration
C. average acceleration
D. uniform positive acceleration
7 Which quantity has the same units as impulse
A. force
B. work
C. linear momentum
D. acceleration
8 To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined
A. Parallel
B. Antiparallel
C. At angle 60°
D. Perpendicular to each other
9 The product of force and time is called
A. acceleration
B. linear momentum
C. angular momentum
D. impulse
10 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
A. a = M/mv
B. a = mM/v
C. a = mv/M
D. a = v/mm

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