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If a car with a speed of 80 km / h collides head-on with a car with a speed of 40 km / h, then a car () A. Car a collides with car B. car B collides with car a first. Car a collides with car B at the same time
C. The two cars collided at the same time
If someone wants to travel from a certain station, it is known that the buses from the station to each station run every hour, and the probability that the waiting time is not more than 10 minutes is calculated___ ．
As the metro train runs every hour, the time between two trains stopping at the station can be represented by a line segment of length 60. While the waiting time is not more than 10 minutes, the time for passengers to get on the platform can be represented by a line segment of length 10. Then the probability of passengers getting on the platform immediately is p = 1060 = 16, so the answer is: 16
A bicycle starts from the station. It meets a bus every 15 minutes and a bus catches up every 30 minutes
The station runs once a long time
Five minutes
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- 1. A bus stops every 5 minutes. A passenger needs to wait for 0 to 5 minutes after arriving at the bus stop. How about the probability of waiting no more than 3 minutes?
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- 8. A bus and a freight car leave from ab at the same time and meet each other after 8 hours A passenger car and a freight car leave from ab at the same time. After 6 hours of meeting, both cars continue to move at the same speed. After 4 hours, the passenger car arrives at B. at this time, the freight car is 188 kilometers away from A. how many kilometers is the distance between a and B
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