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- Question
To cover a distance of 333 km in 2 hours by a car, what should be the average speed of the car (in meter/second)?
Options- A. 166.5
- B. 46.25
- C. 83.25
- D. 92.5
- Correct Answer
- 46.25
- 1. A missile travels at 1440 km/h. How many metres does it travel in one second?
Options- A. 374 metres
- B. 385 metres
- C. 394 metres
- D. 400 metres Discuss
- 2. A plane is going in circles around an airport. The plane takes 3 minutes to complete one round. The angle of elevation of the plane from a point P on the ground at time t seconds is equal to that at time (t + 30) seconds. At time (t + x) seconds, the plane flies vertically above the point P. What is x equal to?
Options- A. 75 seconds
- B. 90 seconds
- C. 105 seconds
- D. 135 seconds Discuss
- 3. A race has three parts. The speed and time required to complete the individual parts for a runner is displayed on the following chart: Part I Part II Part III Speed (kmph) 9 8 7.5 Time (minutes) 50 80 100 What is the average speed of this runner?
Options- A. 8.17 kmph
- B. 8.00 kmph
- C. 7.80 kmph
- D. 7.77 kmph Discuss
- 4. A gun is fired at a distance of 6.64 km away from Ram. He hears the sound 20 seconds later. Then the speed of sound is
Options- A. 664 m/s
- B. 664 km/s
- C. 332 m/s
- D. 332 km/s Discuss
- 5. Raghu goes to college at a speed of 4 kmph and returns at a speed of 3 kmph. If he takes 5.95 hrs in all, then what is the distance between his home and the college?
Options- A. 10.2 km
- B. 10.5 km
- C. 10 km
- D. 20 km Discuss
- 6. A missile travels at 1260 km/h. How many metres does it travel in one second?
Options- A. 322 metres
- B. 369 metres
- C. 384 metres
- D. 350 metres Discuss
- 7. To travel 612 km, an Express train takes 9 hours more than Rajdhani. If the speed of the Express train is doubled, it takes 3 hours less than Rajdhani. The speed (in km/hr) of Rajdhani is
Options- A. 40.8
- B. 51
- C. 30.6
- D. 61.2 Discuss
- 8. Two cyclists P and Q cycle at 20 km/hr and 16 km/hr towards each other respectively. What was the distance (in kms) between them when they started if they met after 40 minutes?
Options- A. 36
- B. 30
- C. 25
- D. 24 Discuss
- 9. A man travels 3?4th of the distance of his journey by bus, 1?6th by Rickshaw and 2 km on foot. Then total distance travelled by the man is
Options- A. 12 km
- B. 18 km
- C. 20 km
- D. 24 km Discuss
- 10. Excluding stoppages, the speed of a bus is 72 kmph and including stoppages, it is 60 kmph. For how many minutes does the bus stop per hour?
Options- A. 12
- B. 8
- C. 15
- D. 10 Discuss
Time and Distance problems
Search Results
Correct Answer: 400 metres
Correct Answer: 105 seconds
Explanation:
Let the plane be at point A at t se
conds and at point B
after t + 30 seconds
Since the motion is uniform, we can say that at time t+15 seconds, the plane is above the point is
diametrically opposite to the point P from where the angle is same.
Now since the time taken to cover the full circ
le is 3 minutes (180
seconds), the time taken by the plane
to reach the diametrically opposite point will be 90 seconds.
So the time after which the plane reaches the point P will be = t+ 15 + 90 seconds = (t + 105 )seconds
Correct Answer: 8.00 kmph
Explanation:
Avg speed = Tot dist/Tot time = (45+64+75)/23 = 184/23
= 8 kmph
Correct Answer: 332 m/s
Correct Answer: 10.2 km
Correct Answer: 350 metres
Correct Answer: 40.8
Correct Answer: 24
Correct Answer: 24 km
Correct Answer: 10
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