18.) A train moves past a telegraph post and a
bridge 264 m long in 8 seconds and 20
seconds respectively. What is the speed of
the train?
S=d=
(A) 69.5 km/hr. (B) 70 km/hr
(C) 79 km/hr (D) 79.2 km/hr
Answers
Answered by
2
Answer:
79.2 km/hr
Step-by-step explanation:
speed = distance /time
speed= 264/20-8= 22 m/s
1 km/hr= 5/18 m/s so,
22× 18/5 = 79.2 km/hr
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Answered by
1
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