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

By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s2)

Question # 2

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

Question # 3

Biomass includes:

Question # 4

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

Question # 5

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 # 6

The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:

Question # 7

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

Question # 8

Velocity of a body changes if

Question # 9

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 # 10

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

Question # 11

A typical rocket consumes about

Question # 12

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

Question # 13

The path followed by the projectile is known as:

Question # 14

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

Question # 15

Laws of motion are not valid in a system which is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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?
A. 4 m/s
B. 2 m/s
C. 8 m/s
D. 1 m/s
2 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
3 If d is the displacement of the body in time t, then its average velocity will be
A. Vav= d x t
B. Vav = t/d
C. Vav = d/t
D. Vav = d/t
4 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
5 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
6 In above figures, tell which set of graphs shows that a body is moving with uniform velocity:
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
7 A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain drops are falling vertically down. To the another man standing on ground the rain will appear
A. To fall vertically down
B. To fall at an angle going from west to east
C. To fall at an angle going from east to west
D. The information given is insufficient to decide the direction of rain
8 A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is
A. 120 x 10.8 N
B. 180 N
C. 720 N
D. 360 N
9 Body which falls freely under gravity provides good example of motion under:
A. Uniform acceleration
B. Non-uniform acceleration
C. Uniform velocity
D. None of these
10 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum

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