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 second law gives the relationship between

Question # 2

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

Question # 3

Acceleration in a body is always produced in the directin of:

Question # 4

The linear momentum of the body is defined as

Question # 5

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Question # 6

Biomass includes:

Question # 7

Swimming becomes possible because of______law of motion.

Question # 8

A body of weight 1 N has a kinetic energy of 1 joule when its speed is:

Question # 9

The shortest distance between two points directed from its initial point to final point is called:

Question # 10

Force is a:

Question # 11

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 # 12

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be

Question # 13

The three equation of motions are useful only for

Question # 14

If the values of instantaneous and average velocities are equal, the body is said to be moving with

Question # 15

If the acceleration of a body is negative, then slope of the velocity-time graph will be:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 Acceleration of a body is negative if the velocity of the body is
A. constant
B. increasing
C. decreasing
D. none of them
2 If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:
A. Force
B. Energy
C. work
D. impulse
3 A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of:
A. 0.5 m/sec2
B. 5 m/sec2
C. 1.5 m/sec2
D. 9.8 m/sec2
4 Swimming becomes possible because of______law of motion.
A. First
B. Second
C. Third
D. None of these
5 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)
A. 58.8 m/s
B. 49 m/s
C. 65 m/s
D. 19.6 m/s
6 A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about
A. 80 m
B. 20 m
C. 160 m
D. 40 m
7 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
8 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass:
A. 2 kg
B. 3 kg
C. 4 kg
D. 8 kg
9 Flight of rocket in the space is an example of
A. Newton's first law
B. Newton's third law
C. Newton's second law
D. all of them
10 One KWh is equal to:
A. 3.6 x 102J
B. 3.6 KJ
C. 3.6 x 101KJ
D. 3.6 MJ

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