SOLUTION: A car is travelling at a speed of 66km/hr find the distance travelled in 10 min and find the revolution of wheels of car travelled in 10 minutes

Question 575114: A car is travelling at a speed of 66km/hr find the distance travelled in 10 min and find the revolution of wheels of car travelled in 10 minutes
Answer by chana(69) (Show Source): You can put this solution on YOUR website!
A car is travelling at a speed of 66km/hr find the distance travelled in 10 min and find the revolution of wheels of car travelled in 10 minutes
sol:
D = speed * time
= 66 *(10/60)
= 11 km.
here you want to find out the number of revolutions
rev per minute = distance covered in 1 min / circumference of the wheel
so we need the radius of the wheel...
you have not mentioned anything to find the radius,,, you missed that part .
so if you got ,subtitute in circumference formula = 2 * pi * r
then dist covered in 1 min = 11/60 km
divide the above two results you will get revolution per min .
multiply by 10 you will get revolutions for 10 mins.
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