ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 3 Motion and Force

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ECAT Physics Chapter 3 Motion and Force

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Question # 1

Distance covered by a freely failing body n the first second of its motion will be:

Question # 2

Blomass includes:

Question # 3

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

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

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

Question # 6

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

Question # 7

Tick the conservation force:

Question # 8

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

Question # 9

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

Question # 10

The dimension of linear inertia is:

Question # 11

The horizontal range of projectile, at a certain place, depends upon

Question # 12

Inertia mass and gravitational mass are

Question # 13

The velocity given to a body to go out of the influence of earth's gravity is known as:

Question # 14

When a body is moving on a surface, the force of friction is called

Question # 15

Essential characteristic of equilibrium is

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Sr.# Question Answer
1 When brakes are applied to a fast moving car, the passenger will be thrown:
A. Forward
B. Backward
C. Downward
D. none of these
2 A train cover 90 km in half an hour. the time taken by it to travel 15 km will be:
A. 20 minutes
B. 48 minutes
C. 10 minutes
D. 5 minutes
3 A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?
A. Both hit the ground at the same veloctiy
B. Both hit the ground at the same speed
C. The change of velocity during the path for both balls is the same
D. The change of speed during the path for both balls is the same
4 If the acceleration of a body is not uniform, then velocity-time graph will be:
A. Curve
B. Straight line
C. Sphere
D. All of these
5 The SI units of momentum is
A. kg m s-2
B. kg ms
C. kg m s2
D. N-s
6 When a shell explodes in mid-air, its fragments fly off in
A. only one direction
B. in two direction
C. different directions
D. a particular direction
7 The direction of the acceleration is the same as that of
A. speed
B. velocity
C. both of them
D. none of them
8 A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is
A. Zero
B. Infinity
C. V
D. 2 V
9 An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then
A. It still moves with the same velocity
B. It will be just floating at the same point in space
C. It will be fall down instantaneously
D. It will lose its velocity gradually
10 The projectile attains maximum horizontal range when it is projected at an angle of
A. 30°
B. 45°
C. 60°
D. 75°

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