At time t = 0, apple 1 is dropped from a bridge onto a roadway beneath the bridg

Question

At time t = 0, apple 1 is dropped from a bridge onto a roadway beneath the bridge. Somewhat later, apple 2 is thrown down from the same height. The figure below gives the vertical positions y of the apples versus t during the falling, until both apples have hit the roadway. With approximately what speed is apple 2 thrown down?

At time t = 0, apple 1 is dropped from a bridge onto a roadway beneath the bridge. Somewhat later, apple 2 is thrown down from the same height. The figure below gives the vertical positions y of the apples versus t during the falling until both apples have hit the roadway. With approximately what speed is apple 2 thrown down? mys 80 60 40 20t-… apple 2 _ apple 1 r(s) 1 23 Additional Materials Section 2.5 Algebra-Squareroots & Squares

Explanation / Answer

For Apple 2

Y=Yo+Vot-(1/2)gt2

when apple 2 hits ground Y=0

0=80+Vo*(4.5-2)-(1/2)*10*(4.5-2)2

2.5Vo =80-31.25=48.75

Vo=19.5 m/s

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