problem02_70 solution

University Physics with Modern Physics with Mastering Physics (11th Edition)

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2.70: The position of the cars as functions of time (taking x 1 = 0 at t = 0) are . , 2 1 0 2 2 1 t v D x at x - = = The cars collide when x 1 = x 2 ; setting the expressions equal yields a quadratic in t, , 0 2 1 0 2 = - + D t v at the solutions to which are ( 29 ( 29 . 2
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Unformatted text preview: 1 , 2 1 2 2 v aD v a t v aD v a t-+-=-+ = The second of these times is negative and does not represent the physical situation. b) ( 29 2 1 2 v aD v at v-+ = = c)...
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