How long will a 50-m-long train travelling at 72 km/h take to cross a pole?
Answers
Answered by
17
Answer:
2.5sec
Step-by-step explanation:
distance=50m
speed =72km/h
=72×5/18(m/s)
=20m/s
speed =distance/ time
time = distance/speed
=50/20
=5/2
=2.5sec
Answered by
2
Step-by-step explanation:
72km=72000m
1hour=3600sec
time- distance
--------------
speed
= 72000
-----------
3600
= 20sec
please mark me as branliest
Similar questions