A car travels at an average speed of 83.2 km/h for 1.00 h and then at an average speed of 42.4 km/h during a second hour. What is the car's average speed during the 2.00 h interval?
A car travels 0.98 km at an average speed of 83.2 km/h and then 0.99 km at an average speed of 42.4 km/h. What is the car's average speed during the 1.97 km interval?
(0.98+0.99)\(.98\83.2+.99\42.4)
(1.97)\(.0117788+.0233491)
(1.97)\(0.0351279)
(1.97\0.0351279)
56.080779
car travels at 50 kilometres per hour for 24 mins
To find the average speed during a given time interval, you need to divide the total distance traveled by the total time taken.
In the first scenario, the car travels at an average speed of 83.2 km/h for 1.00 hour and then at an average speed of 42.4 km/h for the second hour. To find the total distance traveled, you add the distances covered at each speed.
Distance traveled at 83.2 km/h = 83.2 km/h * 1.00 h = 83.2 km
Distance traveled at 42.4 km/h = 42.4 km/h * 1.00 h = 42.4 km
Total distance traveled = 83.2 km + 42.4 km = 125.6 km
Total time taken = 1.00 h + 1.00 h = 2.00 h
Now, to find the average speed, divide the total distance traveled by the total time taken.
Average speed = Total distance traveled / Total time taken
= 125.6 km / 2.00 h
= 62.8 km/h
Therefore, the car's average speed during the 2.00 h interval is 62.8 km/h.
In the second scenario, the car travels 0.98 km at an average speed of 83.2 km/h and then 0.99 km at an average speed of 42.4 km/h.
Total distance traveled = 0.98 km + 0.99 km = 1.97 km
Total time taken = 1.00 h + 1.00 h = 2.00 h
Average speed = Total distance traveled / Total time taken
= 1.97 km / 2.00 h
= 0.985 km/h
Therefore, the car's average speed during the 1.97 km interval is approximately 0.985 km/h.