The problem involves calculating the overall average speed of a racing car that accelerates uniformly through three gears, with specified average speeds and durations for each gear.
The discussion includes various interpretations of how to approach the problem, with some participants providing guidance on calculating total distance and time. There is no explicit consensus, but several productive lines of reasoning are being explored.
Participants note that the problem provides average speeds and times but does not directly give distances, leading to questions about how to derive the necessary values for the average speed calculation.
could not think of a possible formula.Doc Al said:Well? Where's your attempt?
distance traveled by an object during an intervalDoc Al said:What's the most basic definition of average speed?
iamchattha said:could not think of a possible formula.
but in the case of above mentioned question three speeds and vales of time are give...not distance and time...i have to drive average speed using 3 vales of speed and timeWilliam White said:err, everybody in the whole world knows that
speed = miles per hour (or km per hour)
so you know one formula!
William White said:okay
you are in a car that goes 20 miles per hour for 2 hours; then 40 miles per hour for 2 hours and then 60 miles an hour for 6 hours.
how long has elapsed (in hours) and how far has the car gone (in miles) ?
William White said:Q1) a car travels 20mph for 2 hours. How far has it gone?
it would be 480 miles in totaliamchattha said:40 miles
are you referring to thisWilliam White said:edit, you know how to do it now.
Exactly!iamchattha said:distance traveled by an object during an interval