51.

A train 100 m long is running at the speed of 30 km/hr. Find the time taken by it to pass a man standing near the railway line.

A. 13 sec B. 12 sec
C. 11 sec D. 10 sec
Answer:B
Explanation:

52.

A train moves with a speed of 108 kmph. Its speed in metres per second is :

A. 38.8 B. 18
C. 30 D. 10.8
Answer:C
Explanation:

53.

A speed of 14 metres per second is the same as

A. 50.4 km/hr B. 28 km/hr
C. 70 km/hr D. 46.6 km/hr
Answer:A
Explanation:

54.

A man on riding crosses a bridge in 5 minutes when riding is being done at 15 kmph. The length of the bridge is :

A. 125 m B. 250 m
C. 1250 m D. 2500 m
Answer:C
Explanation:

55.

A train 150 m long is running at a speed of 90 kmh. Time taken by the train to cross a tree is

A. 3 sec B. 4 sec
C. 6 sec D. 8 sec
Answer:C
Explanation: