Question

A car travels a distance of 15 km in 20 minute. Find the speed of the car in (i) km h^ -1 , (ii) m * s ^ - 1 .​

Answer 1

1)

Given:-

• d= 15 Km
• Time= 20/60hr= 0.3hr

To Find:-

• the speed of the car in km h^ -1

Solution:-

$speed = \frac{distance}{time}$

$s = \frac{15km}{0.3 \: hr}$

$= > s = 50km \: {hr}^{ - 1}$

2)

Given:-

• d= 15 km= 15000m
• time= 20*60 s=1200 s

To Find:-

• speed of the car in m s ^ - 1 .

solution:-

$speed = \frac{distance}{time}$

$= > s = \frac{15000m}{1200s}$

$= > s = 12.5m {s}^{ - 1}$

Answer 2

Answer:

hope this helps you

have a great day