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 artillery shells travel along parabolic paths under the influence of

Question # 2

A body is thrown from a height h with speed u, it hits the ground with speed V

Question # 3

A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?

Question # 4

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 # 5

If the instantaneous velocity of a body does not change. the body is said to be moving with

Question # 6

The velocity of a projectile is maximum

Question # 7

When a person jumps off the ground, the reaction force of the ground is

Question # 8

One KWh is equal to:

Question # 9

The expression F x t is called impulse if the time 't' is

Question # 10

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 11

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

Question # 12

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

Question # 13

During the projectile motion, the horizontal component of velocity

Question # 14

Acceleration of a body is positive, if the velocity of the body is

Question # 15

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 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:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
2 A cold soft drink is kept on the balance. When the cap is opened, then the weight
A. Increases
B. Decreases
C. First increases, then decreases
D. Remains same
3 The magnitude of the displacement is a line from initial position to final position which is
A. straight
B. curved
C. either be curved or straight
D. none of them
4 Rate of change of momentum is called
A. Impulse
B. Force
C. Torque
D. Momentum
5 Swimming is based on the principle of
A. Newton's 1st law
B. Newton's 2nd law
C. Newton's 3rd law
D. All
6 According to the law of conservation of linear momentum, the total linear momentum of an isolated system
A. increases
B. decreases with time
C. remains constant
D. none of them
7 A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is
A. 2100 m/s2
B. 1400 m/s2
C. 700 m/s2
D. 400 m/s2
8 A typical rocket consumes about
A. 100 kg s-1of fuel
B. 1000 kg s-1of fuel
C. 10000 kg s-1of fuel
D. 100000 kg s-1of fuel
9 The path described by a projectile is called its
A. orbit
B. trajectory
C. range
D. distance
10 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:
A. 100 m/sec
B. 140 m/sec
C. 1960 m/sec
D. 196 m/sec

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