Asked by nicole

a bus travels 280 km south along a straight path with an avg velocity of 88 km/h to the south. then it travels 210 km south with an avg velocity of 75 km/h to the south.
a) how long does the 1st trip last?
b) how long does the 2nd trip last?
c) what is the avg velocity for the total trip?

Answers

Answered by Damon
t1 = 280/88
t2 = 210/75

all south so
v average south = (280+210)/(t1+t2)
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