Question

A racing car travels 425m in 10sec;express this speed in km per hour

Answer 1

find speed than distance =425m and time10sec than speed = distance/time =425/10= 85/2

Answer 2

Answer:

153 km

Step-by-step explanation:

speed of car per 10 second = 425

car express in 1 minute = 425 X 6 = 2,550

so" 1 hour = 60 minutes

2,550 X 60 = 1,53,000 m

1,53,000m = 153 km