session.masteringphysics.com Problem 3.26 MasteringPhysics 6 of I Problem 3.26 E

Question

session.masteringphysics.com Problem 3.26 MasteringPhysics 6 of I Problem 3.26 Extreme-sports enthusiasts have been known to jump off the top of El Capitan, a sheer granite cliff of height 910 m in Yosemite National Park. Assume a jumper runs horizontally off the top of El Capitan with speed 4.0 m/s and enjoys a free fall until she is h 180 mi above the valley floor, at which time she opens her parachute. 4.0 m/s 10 Q Tap image to zoom Part A How long is the jumper in free fall? ignore air resistance. Express your answer using two significant figures and include the appropriate units. t= | Value Units Submit Give Up

Explanation / Answer

distance travelled in free fall=910-180=

time when he opened parachute =time of free fall=sqrt(2*730/(9.8))=12.2 sec

Part A

time of free fall=sqrt(2*730/(9.8))=12.2 sec

part B

distance from clif=horizontal velocity*time=48.8 m

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