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

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

Question # 2

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?

Question # 3

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

Question # 4

A typical rocket consumes about

Question # 5

The slopes of the tangent at any point on the curve gives the value of the

Question # 6

Which quantity has the same dimension as that of impulse?

Question # 7

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

Question # 8

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

Question # 9

Tick the conservation force:

Question # 10

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

Question # 11

At the top of the trajectory of a projectile the acceleration is

Question # 12

Inertial frame of references are those frame of references which are moving with

Question # 13

During the upward motion of the projectile, the vertical component of velocity:

Question # 14

The magnitude of the displacement is a line from initial position to final position which is

Question # 15

When a shall explodes a mid-air, the total momentum of its fragments is

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 A typical rocket consists of fuel
A. more than 60% of launch mass
B. less than 60% of launch mass
C. less than 80% of launch mass
D. more than 80% of launch mass
2 Tick the conservative force:
A. tension in a string
B. Air resistance
C. Elastic spring force
D. Frictional force
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 During the upward motion of the projectile, the vertical component of velocity:
A. Decreases
B. Increases
C. Remains constant
D. None of these
5 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
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 What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?
A. 4 : 5
B. 7 : 9
C. 16 : 25
D. 1 : 1
8 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is:
A. 3 N
B. 4 N
C. 5 N
D. 6 N
9 A body of mass 5 kg is acted upon by a total change n momentum will be:
A. 10 NS
B. 100 NS
C. 140 NS
D. 200 NS
10 A force of 50 dynes is acted on a body of mass 5 g which is at rest, for an interval of 3 seconds, then impulse is
A. 0.15 x 10-3Ns
B. 0.98 x 10-3Ns
C. 1.5 x 10-3Ns
D. 2.5 x 10-3Ns

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