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A car drives from place a to place B at a speed of 100 kilometers per hour. After arriving, it drives from place B to place a at a speed of 60 kilometers per hour. What's the average speed of this car between a and B? (Note: * is a multiplication sign, is a division sign, is a minus sign and is a plus sign) A car drives from place a to place B at the speed of 100 kilometers per hour. After arriving, it drives from place B to place a at the speed of 60 kilometers per hour. What's the average speed of this car between a and B? (Note: * is a multiplication sign, is a division sign, is a minus sign and is a plus sign) to find the answer, you can't just use a few expressions,
Let the distance between a and B be X
The time t from land a to land B is equal to t = x / 100
The time from place B to place a is T2 = x / 60
The average velocity is v = 2x / T + T2
When t + T2 = x / 100 + X / 60 is brought into v = 2x / T + T2, X can be eliminated and the final result is 75
A car goes from place a to place B at the speed of 100 km / h. after arriving at place B, it drives back from place B to place a at the speed of 60 km / h. The average speed of this car is______ Kilometers
(1 + 1) △ 1100 + 160, = 2 △ 8300, = 75 (km); a: the average speed of this car is 75 km
A car goes from place a to place B at the speed of 100 km / h. after arriving at place B, it drives back from place B to place a at the speed of 60 km / h. The average speed of this car is______ Kilometers
(1 + 1) △ 1100 + 160, = 2 △ 8300, = 75 (km); a: the average speed of this car is 75 km
A car drives from place a to place B at the speed of 100 kilometers per hour. After arriving, it drives from place B to place a at the speed of 60 kilometers per hour
A car drives from place a to place B at a speed of 100 kilometers per hour. After arriving, it drives from place B to place a at a speed of 60 kilometers per hour. What's the average speed of this car to and from place a and place B? That's right. Let's set the distance between place a and place B as X. the time t from place a to place B is equal to t = x / 100
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