YS 1111-Faill Blouses For Women Long And Cute Biouses For 4 Jump t dwin Agricult

Question

YS 1111-Faill Blouses For Women Long And Cute Biouses For 4 Jump t dwin Agricultural College-PHYS 1111-Fall17-SEAT Activities and Due Dates HW: 1D Kinematics Resources 9/12/2017 11:55 PM 60/100 Gradebook Availabl Due Dat Question 11 19 Points P Map fA Sapling Learning Grade Ca Descripti While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6 47 m/s. The sione subsequently fails to the ground, which is 12.3 m below the point where the stone leaves your hand. At whar speed does the stone impact the ground? Hovw much time is the stone in the air? Ignorear resistance and take g·981 m. (This is NOT a suggestion to carry out such an Policies: You can ch You can vt up on any You can kes you get it ri You lose 5H n your ques Impact speed m/s Elapsed time O eTextbool O Help With O Web Help a Technical 8 2 3 6 8

Explanation / Answer

Applying vf^2 - vi^2 = 2 a d

vf^2 - (6.47)^2 = 2(-9.81)(12.3)

vf = 16.8 m/s ...........Ans (Impact Speed)

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final speed will be downwrds.

so final velocity, vf = - 16.8 m/s

v0 = 6.47 m/s

Applying vf = v0 + a t

- 16.8 = 6.47 - 9.8 t

t = 2.37 sec .......Ans

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