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21. The net displacement divided by the total time (t) is known as:

Instantaneous velocity
Uniform velocity
Average velocity
Variable velocity

22. The velocity-time graph of a motion starting from rest with uniform acceleration is a straight:

Not passing through origin
Parallel to time axis
Parallel to velocity axis
Passing through origin

23. If the acceleration of a body in one inertial frame is zero, its acceleration in any other inertial frame is:

Increased
Zero
Decreased
Increased then decreased

24. When five times momentum of a body is equal to the kinetic energy of the same body, then velocity is equal to:

15 m/s
20 m/s
10 m/s
5 m/s

25. If a moving object has no force acting on it, it will:

Decelerate and eventually stop
Stop immediately
Continue to move in a straight line at constant velocity
Velocity will increase while moving in a straight line

26. Newton's 3rd law of motion is correlated with:

Law of conservation of energy
Law of conservation of momentum
Law of conservation of velocity
All of these

27. A ball thrown vertically upwards will have constant:

Velocity and acceleration
Kinetic energy, velocity
Acceleration, velocity
Kinetic energy and acceleration

28. Which of the following best describes inertia?

The force of gravity acting on an object
The resistance of an object to a change in its state of motion
The weight of an object
The acceleration of an object due to applied force

29. A car is moving in a circular path at a constant speed. What provides the necessary centripetal force to keep the car moving in this path?

The car's inertia resisting any change in direction
The car's mass pulling it towards the centre of the circle
The engine's power pushing the car forward
The friction between the tyres and the road

30. The natural tendency of an object to remain at rest or in motion with constant:

Friction
Mass
Inertia
Weight

31. A projectile is launched. Its velocity is maximum at:

Point of projection
Highest point
Between launching and highest point
All points

32. A projectile is thrown at an angle of 45° with horizontal and its range is R₁. Another projectile is thrown at an angle of 45° with vertical and its range is R₂. The relation between R₁ and R₂ is:

R₁ = 2R₂
R₁ = 2R₂
R₁ = R₂
3R₁ = R₂

33. A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?

Kinetic energy alone
Momentum and kinetic energy both
Momentum alone
Neither kinetic energy nor momentum

34. In Newton's first law of motion which quantity remains constant:

Velocity
Amplitude
Angular displacement
Amount of work

35. Law of inertia satisfies:

Condition of equilibrium
Condition of variable force
Condition of force in contact
Condition of conservation of mass

36. The vertical and horizontal component of the projectile motion are:

Correlated with each other
Independent of each other
Dependent on each other
Associated with each other

37. A ball is kicked horizontally from the top of a 10 m high cliff with an initial speed of 15 m/s. After 2 seconds, which of the following statement describes the ball's horizontal and vertical components?

The horizontal velocity is 15 m/s while vertical velocity is 20 m/s downwards
The horizontal velocity is 15 m/s while vertical velocity is 15 m/s downwards
The horizontal velocity is 30 m/s while vertical velocity is 20 m/s downwards
The horizontal velocity is 15 m/s while vertical velocity is 0 m/s

38. A cyclist comes to a skidding stop in 10m. During this process, the opposing force on the cycle due to the road is 200N. How much work does the road on the cycle?

–1800 J
–2000 J
200 J
1900 J

39. How does an angle between the force applied and the direction of motion influence the work done on an object?

Work is constant regardless of the angle
Work is maximum when the angle is 0°
Work is negative when the angle is 90°
Work is 0 when the angle is 45°

40. A nurse is pushing a wheelchair with an 80 Kg patient sitting on it. How much work is done by the patient's weight?

Half of the work
Minimum work
Maximum work
No work