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A car went up a hill at 10 kilometers per hour and down the same distance at 20 kilometers per hour. what was the average speed?
Wiki User
∙ 14y ago
Take a suitable distance, for example 20 kilometers. (The result is the same for any distance; you can also use a distance "x" - this will cancel in the end.)
At 20 km, it will take 2 hours to go up, and 1 hour to go down. This means it takes a total of 3 hours to move 40 km - an average speed of 13.33 km/hour.
Note that the slower speed affects the result more than the higher speed, because the car goes longer at this slower speed!
Wiki User
∙ 14y ago
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maybe, you should get off wiki answers, and figure it out. lets see, you need to divide it down to km/pH. 80 kilometers = 2 hours, 40 kilometers in 1 hour. average speed? 40 km. that's saying they don't stop anywhere.
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distance divided by time equals speed.
What is an experiment you could perform to determine the average speed of a toy car rolling down an incline?
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How long does it take to drive 0.34 miles?
Average Speed = (distance traveled) / (total time), Total time = (distance traveled) / (average speed). So, to calculate time taken, you need to know the speed and the distance. Note that average speed is a quantity that is normally calculated based on the distance traveled and the time taken. If you slow down and speed up, these factors affect your average speed over a given distance. But if you were already traveling at a given speed and stay constant (say you're on a flat straight road and you're traveling at 50 miles per hour with the cruise control set), then your average speed would be that constant speed. So, in the example, if you were going 50 MPH, then: Total time = (distance traveled) / (average speed) = 0.34 miles / (50 miles/hour) = 0.0068 hr = 0.408 minutes = 24.48 seconds (note this is only for the example speed of 50 MPH - plug in your own speed to obtain the result that you are looking for)
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Describe an experiment you could perform to determern the average speed of a toy car rolling down an incline?
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A car traveled 80 km in 2 hours What was its average speed in km per hour?
maybe, you should get off wiki answers, and figure it out. lets see, you need to divide it down to km/pH. 80 kilometers = 2 hours, 40 kilometers in 1 hour. average speed? 40 km. that's saying they don't stop anywhere.
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2.8 m/s A+ program answer (:
