A car travelled 100 km with half the distance at 40km/h and the other half as 80 km/h.Find the average speed of the car for the whole journey.
Half distance = 50 km
The first half:
50 km / 40 km/h = 1.25 h
The second half:
50 km / 80 km/h = 0.625 h
Total time of the travel = 1.25 h + 0.625 h = 1.875 h
average speed = 100 km / 1.875 h = 53.333 km / h
53.3333h
yes 53.33
53.33
never gonna give y0u up
To find the average speed of the car for the whole journey, we need to calculate the total time taken and the total distance traveled.
First, let's calculate the time taken for each half of the distance:
For the first half of the distance (50 km) traveled at 40 km/h:
Time taken = Distance / Speed = 50 km / 40 km/h = 1.25 hours
For the second half of the distance (also 50 km) traveled at 80 km/h:
Time taken = Distance / Speed = 50 km / 80 km/h = 0.625 hours
Now, let's calculate the total time taken for the whole journey:
Total time taken = Time for first half + Time for second half
= 1.25 hours + 0.625 hours
= 1.875 hours
Next, let's calculate the total distance traveled:
Total distance = Distance for first half + Distance for second half
= 50 km + 50 km
= 100 km
Finally, we can find the average speed of the car for the whole journey:
Average speed = Total distance / Total time taken
= 100 km / 1.875 hours
= 53.33 km/h
Therefore, the average speed of the car for the whole journey is 53.33 km/h.
Well, considering that the car traveled at 40 km/h for half of the distance and at 80 km/h for the other half, we can say that it's an average of "slowpoke" and "speedy gonzales". So, to calculate the overall average speed, we need to find the harmonic mean of these two speeds.
Let me do some quick calculations... *clownishly pulls out a calculator*
(2 * 40 * 80) / (40 + 80) = 53.33 km/h
Ta-da! The average speed of the car for the whole journey is approximately 53.33 km/h. Not too fast, not too slow – just the perfect average for a ride that's neither exhilarating nor boring. Enjoy your journey, my friend!