Question

2.
How long will/a train 450m long
travelling at 45km per hour take to
cross a tree?
[36 seconds)​

Answer 1

To convert…km/h into m/s multiply by 5/18(1000/3600)

So now 72*5/18=20m/s

500 m train will take…500/20=25 s

Complete train will take 25s

to cross the tree…

Answer 2

Answer: To convert…km/h into m/s multiply by 5/18(1000/3600)

So now 72*5/18=20m/s

500 m train will take…500/20=25 s

Complete train will take 25s

to cross the tree…

Step-by-step explanation: Please mark me the brainleist