Question

The odometer of a car reads 47321 km when the clock shows the time 8 :10 am what is the speed distance moved by the car if 8:30 am the odometer reading is 47336km ?calculate the speed of the car in m per second

Answer 1

Distance traveled at 8:30 a.m -- 57321 km

Final distance traveled at 8:50 a.m -- 57336 km

Distance traveled between 8:30 and 8:50 am -- 57336-57321=15 km

Time taken -- 20 mins( since 8:30 to 8:50 is 20 minutes)

So,speed of car in km per minute = 15/20 km per min.= 0.75 km per min.

in km per hour= 15/20 X 60 = 45 kmph.

So the speed of car is 45kmph or 0.75 km per min if it covers 15km in 20 minutes.