Question

Annabelle is taking the polar Express ALL the way to north pole!The polar Express is 100 metres long and it takes 30 seconds to cross Santa's 400m ice bridge.What speed is the train going at?

Answer 1

speed = distance /time
s= 300 /30
s=10m/s

Answer 2

Answer:

16.67 m/s.

Step-by-step explanation:

Length of polar express = 100 m

Length of bridge = 400 m

Total distance = 100m +400m

                        =500 m

Now we are given that it takes 30 seconds to cross ice bridge.

So, Time = 30 seconds

$Speed = \frac{Distance}{Time}$

$Speed = \frac{500}{30}$

$Speed = 16.67m/s$

Hence the speed of the train is 16.67 m/s.