Answer:
25 m/s
Explanation:
⠀⠀⠀⇒ Speed = 90 km/h
⠀⠀⠀⇒ Speed = 90 km/60 min [As 1 hr = 60 min]
⠀⠀⠀⇒ Speed = (90 × 1000) m/(60 × 60)sec
⠀⠀⠀⇒ Speed = 90000 m/3600 sec
⠀⠀⠀⇒ Speed = 900 m/36 sec
⠀⠀⠀⇒ Speed = 300 m/12 sec
⠀⠀⠀⇒ Speed = 100 m/4 sec
⠀⠀⠀⇒ Speed = 25 m/s
