Selected MCQ

Current Question
If a car travels at 72 km/h, what is its speed in m/s?
  • A. 10
  • B. 15
  • C. 20
  • D. 25
Correct Answer: C
Explanation:
72 × 5/18 = 20 m/s.
Related Question 1
The speed of the boat in still water is 5 km/h. It travels upstream and downstream the same distance. Find stream speed.
  • A. 5 km/h
  • B. 8 km/h
  • C. 10 km/h
  • D. 15 km/h
Correct Answer: A
Explanation:
Equal time implies that stream speed equals still-water speed.
Related Question 2
If a person travels half distance at 40 km/h and half at 60 km/h, average speed is ____.
  • A. 48 km/h
  • B. 50 km/h
  • C. 52 km/h
  • D. 55 km/h
Correct Answer: A
Explanation:
Harmonic mean = 48 km/h.
Related Question 3
If a train travels 120 km in 2 hours, its speed is ____.
  • A. 50 km/h
  • B. 60 km/h
  • C. 70 km/h
  • D. 80 km/h
Correct Answer: B
Explanation:
Speed = 120/2 = 60 km/h.
Related Question 4
If a train travels 90 km in 1.5 hours, what is its speed?
  • A. 50 km/h
  • B. 55 km/h
  • C. 60 km/h
  • D. 65 km/h
Correct Answer: C
Explanation:
Speed = 90/1.5 = 60.
Related Question 5
Danish travels at different speeds. Total distance is ____.
  • A. 300 km
  • B. 290 km
  • C. 250 km
  • D. 240 km
Correct Answer: B
Explanation:
Distance = speed × time.