ECAT Pre Computer Science Chapter 3 MCQ Test With Answer

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

Try The 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

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Question # 2

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 3

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 4

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Question # 5

The motion in a plane is the motion in

Question # 6

Which quantity has the same units as impulse

Question # 7

A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is

Question # 8

Essential characteristic of equilibrium is

Question # 9

A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is

Question # 10

One KWh is equal to:

Question # 11

The vertical component of velocity of a projectile during its motion is minimum

Question # 12

The mass of the object is a quantities measure of its

Question # 13

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

Question # 14

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Question # 15

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?

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Sr.# Question Answer
1 The product of force and time is called change in:
A. Momentum
B. Impulse
C. Force
D. Both a and b
2 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?
A. 60 km/hr
B. 80 km/hr
C. 120 km/hr
D. 180 km/hr
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 Tick the conservation force:
A. Tension in a string
B. Air resistance string
C. Elastic spring force
D. Frictional force
5 The path followed by the projectile is known as:
A. Cycle
B. Hyperbola
C. Trajectory
D. Route
6 Linear momentum is a
A. fixed quantity
B. constant quantity
C. scalar quantity
D. vector quantity
7 A body moving with uniform velocity has
A. positive acceleration
B. negative acceleration
C. infinite acceleration
D. zero acceleration
8 The motion of a body in a straight line is the motion in
A. one dimension
B. two dimension
C. three dimension
D. four dimension
9 In the expression F x t, the force F is
A. total force
B. instantaneous force
C. average force
D. all of them
10 An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called
A. a rocket
B. an aeroplane
C. a projectile
D. a ballon
11 Acceleration produced in a body by a force varies
A. inversely as the applied force
B. directly as the applied force
C. directly as the mass of the body
D. none of them
12 When body moves with increasing acceleration, its velocity time graph is a
A. straight line
B. horizontal straight line
C. vertical straight line
D. curve
13 A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be
A. Zero
B. g
C. -g
D. V + g
14 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
15 The velocity given to a body to go out of the influence of earth's gravity is known as:
A. Terminal velocity
B. Orbital velocity
C. Escape velocity
D. None of these

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