Question 2 of 8 sapling L amng this question was witten by Sean Cordry at Walter

Question

Question 2 of 8 sapling L amng this question was witten by Sean Cordry at Walters State Community College Map d Tina is looking out a window and throws marble straight downward toward the sidewalk below at a speed of 5.00 m/s and the window is 37.0 meters above the sidewalk. Answer the two questions below, using three significant digits Part A: What is the speed of the ball (vi) when it hits the ground? Number Vt = m/s emember: enter a magnitude.) Part B: After 1.90 s, how far down has the marble travelled? Number m (Enter distance as a positive value.) Ay Previous Next Save And Exit

Explanation / Answer

A)

(1/2)mvf^2 - (1/2)mvi^2 = mgh

vf^2 - 5^2 = 2*9.8*37

vf = sqrt(750.2) = 27.39 m/s

B)

using equation

D = ut + (1/2)at^2

y = 5*1.9 + (1/2)*9.8*(1.9)^2 = 27.19 m

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