Question

The velocity of a train in a particular direction increases to 60 kilometres per hour
from 30 kms per hour in one minute. If the train moves with a uniform acceleration
during that time, what is its acceleration ? ​

Answer 1

Answer:

-0.5 m/s^2

Explanation:

v = u + at

30 = 60 + a(60)

30-60 = a(60)

-30/60 = a

- 0.5 m/s^2 = a

Answer 2

Answer:

Trains is accelerating at a increased rate 1 km/ per second over 30 seconds as there are a matching uniformly increases in the trains speed from 30 km/h to 60 km/h over 30 seconds duration.

30 km is 30,000 metres divided by 3,600 is 8.333 metres per second

35 km is 35,000 metres divided by 3,600 is 9.722 metres per second

40 km is 40,000 metres divided by 3,600 is 11.111 metres per second

Average is: 45 km is 45,000 metres divided by 3,600 is 12.5 metres per second

50 km is 50,000 metres divided by 3,600 is 13.888 metres per second

55 km is 55,000 metres divided by 3600 is 15,277 metres per second

60 km is 60,000 metres divided by 3,600 is 16.666 metres per second

30 seconds x 12.5 metres distance (average) per second = 375 metres in total.

Train travels a Total Distance of 375 metres in a Time of 30 seconds with an Average Speed of 45 km/h