Question

A car covers 3 Km in 15 seconds. What is the speed ? ​

Answer 1

distance=3km=3000m

time=15seconds

speed= distance × time

=3000×15

=45000m/s

Answer 2

Given:

Distance covered by the car= 3km

Time taken by the car= 15 seconds

To find:

Speed of the car

Solution:

As we know,

Speed= Distance/Time

Both need to be in the same unit so we convert the time into hours.

So Time = 15 seconds = 15/60 hour or 1/4 hour

Speed = 3/(1/4) km/hour = 12 km/hour

So, the speed of the car is 12 km/hour.