you drive your car in a straight line at 15 m/s for 10 km, then at 25m/s for another 10 km. a) is your average speed for the entire trip more than, less than, or equal to 20 m/s ? choose the best explanation from the following: A. More time is spent driving at 15 m /s than at 25 m/s. B. The average of 15 m/s and 25 m/s is 20 m/s. C. Less time is spent driving at 15 m/s than at 25 m/s.

The average speed for the entire trip is 18.75 m/s. How is average speed calculated?The average speed is the ratio of total length traveled to total time taken to travel that length.Thus, if then,where Sa is average speed of the traveller.WE cannot average the two speeds in conditions of equal distance. WE need equal time.Here 15 m/s for 10 km would take 666.67 seconds. and 25 m/s for another 10 km would take 400 seconds. The Total time: 1066.67 seconds. The Total distance 20 km. The average speed = 20000 m/1066.67 seconds = 18.75 m/s. If We had gone 15 m/s for the same *time* as going at 25 m/s, then we could have averaged the speeds directly. Hence, The average speed for the entire trip is 18.75 m/s. Learn more about average speed here:brainly.com/question/12322912

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