Question

train 210 metres long took 12 second to pass a 90 m long tunal find the speed of the train​

Answer 1

Answer:

7.5 m/s

Step-by-step explanation:

speed= Distance/Time

so distance =90m and time =12s

so 90/12 = 7.5m/s

Answer 2

Answer:

here ,the total distance= 90+2×210.

= 510m

Total time taken= 12sec

now we know that;

speed= distance/ time

thus ,the speed of train = 510/12

= 42.5m/sec