Question

Two runners approaching each other on a straight track have constant speeds as shown, while they are 100m apart. How long will it take for the runners to meet if they maintain their respective speeds?

one runner is running 4.5m/s while the other is 3.5m/s
Suppose a racecar is traveling around a circular track in a clockwise direction with a constant speed of 200 km/hr. What is the velocity of the racecar when it is at the northern most end of the track?

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