Question

please answer the question

Answer 1

here's your solution

Answer 2

first change the time in km

so, 1 min = 1/60 hour

then 20 min=20/60

so 20 min=1/3 hrs

so ,speed = distance /time

speed=15/1/3

speed = 45 km/h

ii} 1 min=60 sec

20 min=1200 sec

1 km=1000 m

15 km = 15000 m

so speed=distance / time

15000/1200

12.5 m/s