Question

Two boats start together and race across a 50-km-wide lake and back. Boat A goes across at 50 km/h and returns at 50 km/h. Boat B goes across at 25 km/h, and its crew, realizing how far behind it is getting, returns at 75 km/h. Turnaround times are negligible, and the boat that completes the round trip first wins.

(a) Draw a clear physic diagram( use a straight edge)

(b) How much time does each boat take to complete a round trip?

(c) What is the average velocity of the winning boat?

(d) What is the average speed of the loosing boat?

Answer 1