Question

Q- A man walks to his office with a constant speed of 5 km/hr and reaches there in 20 minutes. Find the distance of his office.( Write formula also used for calculation.)
Chapter name is- motion and time​

Answer 1

Distance = Speed × Time

Given speed = 5 km/h

Given Time is = 20 minutes

• We should make the unit of time in hour, so that calculation is possible
• 1 minute = 1/60 hour
• 20 minutes = 20/60 = 1/3 hour

Now , let's find the distance by the formula mentioned at beginning...

Distance = Speed in Km/h × Time in hour

$distance = 5 \times \frac{1}{3} = \frac{5}{3} km \: = 1.67km$

Distance to his office is 5/3 km