Question

A cyclist travels 108 m in 12 seconds. What is her speed in km/h

Answer 1

Step-by-step explanation:

speed= distance/time

so, speed= 108/12

=9m/sec

in km/h is 9/1000×60

= 27/50

l hope it is helpful to.

Answer 2

Given:

Distance = 108 m

Time taken = 12 seconds

To Find:

The speed in km/h

Solution

Find the distance in km:

Distance = 108 m

Distance = 108 ÷ 1000 km

Distance = 0.108 km

Find the time in seconds:

Time Taken = 12 seconds

Time Taken = 12 ÷ 60 ÷ 60 hours

Time Taken = 1/300 hour

Find the speed:

Speed = Distance ÷ Time

Speed = 0.108 ÷ 1/300

Speed = 0.108 x 300

Speed = 32.4 km/h

Answer: The speed is 32.4 km/h