ch13-p091 - 2 91. (a) It is possible to use v 2 = v0 + 2a y...

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However, our approach will not assume constant acceleration; we use energy conservation: 0 22 0 00 2( ) 11 GM r r GMm GMm mv mv v rr r r −=− ¡ = which yields v = 1.4 × 10 6 m/s. (b) We estimate the height of the apple to be h = 7 cm = 0.07 m. We may find the answer by evaluating Eq. 13-11 at the surface (radius r in part (a)) and at radius r + h , being careful not to round off, and then taking the difference of the two values, or we may take
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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