Question

Two cars start from the same place at the same time in the same direction. The speed of the first car is 70 km/h and that of the second car is 20 m/s.
i) Which car is moving faster ?
ii) What is the distance between the cars after 1 hour 15 minutes?
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Answer 1

Answer:

i] Speed of car 1 = 70km/hr

Speed of car 2 =.20m/hr

∴ Speed of car 1 is in km, so we will convert it into m.

∴ 1 km = 1000 m

∴ 70 km = 70 x 1000

∴ 70 km = 70000 m

∴ 70000 m > 20 m

∴ Car 1 is moving faster than Car 2

ii] When we take the car speed after 1 hr and 15 min, the distance between the two cars will be same only.

Distance between the two cars = 70000 - 20

= 69980 m

∴ Distance between the two cars is 69980 m.