Two boats start together and race across a 80 km wide lake and back. Boat A goes

Question

Two boats start together and race across a 80 km wide lake and back. Boat A goes across at 10 km/h abd returns at 10 km/h. Boat B goes across at 40 km/h, and its crew, realizing how far behind it is getting, returns at 120 km/h. Turnaround are negligible, and the boat that completes the round trip first wins. Which boat wins? (Or is it tie?) boat A boat B It's a tie. By how much? __________ km What is the average velocity of the winning boat? ___________ Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. km/h

Explanation / Answer

here,

b)

for this part

we have to find the avearge velocity i.e. net displacement /total time taken

as the boat cmes to its starting point

the net displacement is zero

so, the average velocity = 0/2 = 0 km/h

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