Safari Flie Edit View History Bookmarks Window Help 30% i webassign.net ch. 4 HW

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Safari Flie Edit View History Bookmarks Window Help 30% i webassign.net ch. 4 HW ulty/mihaib/courses/2018-fal/2 To Start An Avalanche On A Mountain Slope, An Viewing Saved Work Revert to Last Response 4. 1 points SerPSE9 4.P011 My Notes Ask Your Te ams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height ft when leaving the ground at an angle of 49.20. With what speed, in SI units, does it leave the ground to make this leap? 10.26 m/s Need Heip? Read It Viewing Saved Work Revert to Last Response 5. -/2 points SerPSE9 4.P.016. WI My Notes Ask Your Teac To start an avalanche on a mountain slope, an artillery shell is fired with an initial velocity of 350 m/s at 54.0° above the horizontal. It explodes on the mountainside 40.0 s after firing. What are the x and y coordinates of the shell where it explodes, relative to its firing point? Need Help? RosdWatch It Submit Answer Save Progress Practice Another Version -15 points SerPSE9 4.P.024 My Notes Ask Your Teacher A basketball star covers 3.10 m horizontally in a jump to dunk the ball. His motion through space can be modeled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02 m when he leaves the floor. It reaches a maximum height of 1.80 m above the floor and is at elevation 0.880 m when he touches down again. (a) Determine his time of flight (his "hang time").

Explanation / Answer

Solve x motion: xf = xi + vxit + 1 /2 axt^2

xf = 0 + vicost + 0

xf = 0 + (350 m/s) cos(54 ) (42.0 s)

= 8640.44 m

Solve y motion:

yf = yi + vyit + 1/2 ayt^2 yf

= 0 + (350 m/s)sin(54 )(40 ) + 1 /2 (9.8 m/s2 )(40 s)^ 2

= 88158.23 m

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