JEE (Main) Physics - Kinematics Multiple Choice Questions (MCQs)

46. Which of the following describes the frame of reference in motion?

A. A stationary object in space

B. A moving object with respect to Earth

C. A stationary object from which motion is observed

D. A point of origin of the coordinate system

Answer: C. A stationary object from which motion is observed

47. What is the unit of velocity in the SI system?

A. meter per second (m/s)

B. meter per minute (m/min)

C. kilometer per second (km/s)

D. kilometer per hour (km/h)

Answer: A. meter per second (m/s)

48. In a motion along a straight line, an object moves with a constant velocity. What can be inferred about the acceleration?

A. The acceleration is zero

B. The acceleration is constant

C. The acceleration is increasing

D. The acceleration is negative

Answer: A. The acceleration is zero

49. An object moves with varying speed. Which of the following is true for the motion of the object?

A. The motion is uniform

B. The motion is non-uniform

C. The object is at rest

D. The object moves with constant velocity

Answer: B. The motion is non-uniform

50. Which of the following is the formula for calculating average speed?

A. Total distance / Total time

B. Total displacement / Total time

C. Initial velocity / Final velocity

D. Final velocity / Initial velocity

Answer: A. Total distance / Total time

51. If an object moves with uniform velocity, what will be the slope of its position-time graph?

A. Zero

B. Positive constant

C. Negative constant

D. A curve

Answer: B. Positive constant

52. For uniformly accelerated motion, which of the following is true?

A. The acceleration is constant

B. The acceleration varies with time

C. The object moves with constant velocity

D. The velocity-time graph is a straight line with a positive slope

Answer: A. The acceleration is constant

53. What is the instantaneous velocity at any given point on a position-time graph?

A. The slope of the position-time graph

B. The area under the position-time graph

C. The slope of the velocity-time graph

D. The area under the velocity-time graph

Answer: A. The slope of the position-time graph

54. In a velocity-time graph, the area under the curve represents:

A. Acceleration

B. Distance

C. Velocity

D. Displacement

Answer: D. Displacement

55. The equation v = u + at represents the relationship between velocity, initial velocity, acceleration, and time in:

A. Uniform motion

B. Non-uniform motion

C. Uniformly accelerated motion

D. Circular motion

Answer: C. Uniformly accelerated motion

56. The position-time graph of an object moving with constant velocity is:

A. A straight line with a negative slope

B. A straight line with a positive slope

C. A parabola

D. A hyperbola

Answer: B. A straight line with a positive slope

57. Which of the following equations is valid for uniformly accelerated motion in terms of displacement, initial velocity, acceleration, and time?

A. v = u + at

B. s = ut + (1/2)at²

C. v² = u² + 2as

D. All of the above

Answer: D. All of the above

58. For an object moving with non-uniform velocity, which graph will best represent its motion?

A. A straight line on the position-time graph

B. A curve on the position-time graph

C. A horizontal line on the velocity-time graph

D. A straight line with a negative slope on the velocity-time graph

Answer: B. A curve on the position-time graph

59. If two objects are moving towards each other with velocities of 5 m/s and 10 m/s, their relative velocity is:

A. 5 m/s

B. 15 m/s

C. 10 m/s

D. 0 m/s

Answer: B. 15 m/s

60. In relative velocity, if two objects are moving in opposite directions, their relative velocity is:

A. The sum of their velocities

B. The difference of their velocities

C. Zero

D. The average of their velocities

Answer: A. The sum of their velocities

JEE (Main) Physics - Kinematics Multiple Choice Questions (MCQs)

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