Question

Compare the speeds of the following cars:
(i) The first car crosses two electric posts which are 40m apart in 2 seconds.
(II) The second car covers a distance of 108 km in 2 hrs. ​

Answer 1

Answer:

The first car is faster than the second

Step-by-step explanation:

Speed of 1st Car = Distance ÷ Time

= 40÷2

= 20 m/s

Speed of 2nd Car = Distance ÷ Time

= 108 ÷ 2

= 54 km/hr

To convert Km/hr into m/s , we need to multiply it with 5/18

54× 5/18

15m/s = Speed of 2nd car

Thus , 1st car is faster...