6, Physics

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A skydiver falls d1 = 495 meters in t1 = 22 s before opening his parachute. After the chute opens, he falls an additional d2 = 470 meters in t2 = 56.5 s.
(a) Write an expression that describes the skydiver''''s average speed, v1 during the period before opening the chute in terms of the given quantities.
v1 =

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