Question

The changes in displacement in three consecutive instances are 5 m, 4 m, 11 m, the total time taken is 5 s. What is the average velocity in m/s?

(a) 1

(b) 4

(c) 7

(d) 6

The question was posed to me at a job interview.

The origin of the question is Straight Line Motion in chapter Motion in a Straight Line of Physics – Class 11

Answer 1

Correct answer is (b) 4

Best explanation: The total change in displacement = 20 m. Total time taken = 5 s. Average velocity = total change in displacement/total time taken = 20/5 = 4 m/s.