Assignments Mastering Physics: Week 3 Lon x C session masteringphysics.com 74841

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Assignments Mastering Physics: Week 3 Lon x C session masteringphysics.com 74841960 Physics 2 Winter Quarter 2017 Week 3 Long MK-jump-up-T1 MK jump-up-T1 Part A The best rebounders in basketball have a vertical leap What is their initial launch" speed off the ground? (that is, the vertical movement of a fixed point on their body) of about 100 cm Submit My Answers Give Up incorrect; Try Again; 3 attempts remaining Part B How long are they in the air? Subm My Answers Give Up m/s Help I Close Resources a e previous l 6 of 15 l next Provide Feedback Continue

Explanation / Answer

A)From eqn of motion

v^2 = u^2 + 2 a S

In our case, v = 0 ; a = g = 9.8 ; S = h = 100 cm = 1 m

u^2 = 0 - 2 x -9.8 x 1 => u = sqrt(9.8) = 4.43 m/s

Hence, u = 4.43 m/s

B)From S = ut + 1/2 a t^2

0 = 4.43 x t + 1/2 x 9.8 x t^2

t = 4.43 x 2/9.8 = 0.904 s

Hence, t = 0.904 s

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