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12th Grade > Physics

KINEMATICS MCQs

Circular Kinematics

Total Questions : 41 | Page 4 of 5 pages
Question 31. What two measurements are necessary for calculating speed?
  1.    Mass and time
  2.    Temperature and mass
  3.    Mass and distance
  4.    Distance and time
 Discuss Question
Answer: Option D. -> Distance and time
Question 32. What is the difference between a vector quantity and a scalar quantity?
  1.    A scalar has a magnitude and direction and a vector has only a magnitude
  2.    A vector has a magnitude and direction and a scalar has only a magnitude
  3.    A scalar has a direction and a vector has a magnitude
  4.    None of the above
 Discuss Question
Answer: Option B. -> A vector has a magnitude and direction and a scalar has only a magnitude
Question 33. Total distance covered in total time taken is termed as
  1.    Instantaneous speed
  2.    Average speed
  3.    Uniform speed
  4.    Variable speed
 Discuss Question
Answer: Option B. -> Average speed
Question 34. Which has greater linear speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?
  1.    the inside horse
  2.    the outside horse
  3.    Neither
  4.    None of these
 Discuss Question
Answer: Option B. -> the outside horse
Question 35. What is the acceleration of an object moving at constant velocity?
  1.    2 m/s2
  2.    1 m/s2
  3.    0 m/s2
  4.    0.8 m/s2
 Discuss Question
Answer: Option C. -> 0 m/s2
Question 36. What does a horizontal line on a speed-time graph indicate?
  1.    Constant distance
  2.    Constant speed
  3.    Constant acceleration
  4.    All of above
 Discuss Question
Answer: Option B. -> Constant speed
Question 37. What is the area under a speed-time graph equal to?
  1.    Acceleration
  2.    Distance travelled
  3.    Instantaneous speed
  4.    All of above
 Discuss Question
Answer: Option B. -> Distance travelled
Question 38. Which of the following scenarios has caused the motion described by the graph?
  1.    An object rolling down a slope and then rolling up a slope
  2.    An object rolling down a steep slope
  3.    An object rolling up a slope and then returning to its original position.
  4.    Both A & B
 Discuss Question
Answer: Option C. -> An object rolling up a slope and then returning to its original position.
Question 39. What is the slope of a velocity-time graph an indication of?
  1.    Distance travelled
  2.    Instantaneous speed
  3.    Acceleration
  4.    None of these
 Discuss Question
Answer: Option C. -> Acceleration
Question 40. Which of the following statements about speed and velocity is correct?
  1.    Velocity only describes an object’s rate of motion.
  2.    Speed describes how an object is changing its velocity.
  3.    Speed and velocity both describe how an object is speeding up.
  4.    Only velocity includes the direction an object is traveling.
 Discuss Question
Answer: Option D. -> Only velocity includes the direction an object is traveling.

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