Monday, April 28, 2008

Question 1: Related Rates and the Related Bicycle



On the countryside, lies an intersection of roads. 12 km North of the intersection is positioned Car A, moving north of the intersection at the rate of 90km/h. 6 km West of the intersection is positioned another Car B, moving towards the intersection at the rate of 72 km/h.

A.) Find the rate at which the distance, c, between cars A and B is increasing. Approximate your answer to the nearest hundreth.

B.) If the rate (dc/dt) at which the distance between vehicles A and B is increasing is numerically equivalent to the time required in hours for a bicycle to reach its destination, find the distance travelled by the bicycle given the following:

  • S(t) = y
  • S(0) = 4

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