A car goes 20 metres in a second. Find its speed in km/hr `18` b. `72` c. `36` d. `20`

A car goes 20 metres in a second.Find its speed in km/hr18b.72c.36d.20

The speed of a train is 20m/s. Find it in km/hr

Two trains are running in opposite direction is with the same speed. If the length of each train is 120 metres and they cross each other in 12 seconds, then the speed of each train (in km/hr) is 10 b. 36 c. 18 d. 72

A train 132m long passes a telegraph pole in 6 seconds.Find the speed of the train.70km/hr b.72backslash km/hr c.79.2backslash km/hr d.80backslash km/hr