During the middle of a family picnic, Barry Allen received a message that his friends Bruce and Hal needed to be saved. Barry promised his wife Iris...
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# I'm really bad at drawing

During the middle of a family picnic, Barry Allen received a message that his friends Bruce and Hal needed
to be saved. Barry promised his wife Iris that he would be back in exactly 5 minutes. From that that picnic
location, Barry runs at a speed of 600 m/s for 2 minutes at a heading of 350 north of west to save Bruce.
He then changed his heading to 30 west of north, slows down to 400 m/s and runs for 1 minute to save
Hal. (The changes in speed are essentially instantaneous and not part of solving this problem).
(@) Draw a physical representation of the displacement during Barry's full trip.
(b) Use the Related Quantities sense-making technique to compare Barry's total distance traveled to the
magnitude of his displacement.
(c) What average velocity (magnitude and direction) does Barry need to return back to the picnic in
order to keep his promise to Iris?

(a) path in blue purple and red. (b) Comparing both... View the full answer

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