A train 350 m long crosses an electric pole in 28 seconds. Find the speed of the train in km/hour.
Answers
Answered by
4
Answer:
45 km / hr
Step-by-step explanation:
350 m = 7/20 km
28 sec = 7/900 Hr
Speed = (7/20) / (7/900)
= 45 Km / Hr
Answered by
1
Step-by-step explanation:
d=350 m
t=28sec
∴ speed =
t
d
∴ speed =
28
350
m/sec
∴ speed =
4
50
m/sec
∴ speed =12.5 m/s
∴ speed =
5
18
×
4
50
km/hr
∴ speed =
4
180
km/hr
∴ speed =45 km/hr
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