Bill steps off a 3.2 m high divingboard and drops to the water below. At the sam

Question

Bill steps off a 3.2 m high divingboard and drops to the water below. At the same time, Ted jumpsupward with a speed of 3.8 m/s from a 1.0m high diving board. Choosing the origin to be at the water'ssurface, and upward to be the positive x direction, writethe x-versus-t of motion for both Bill and Ted.(Use g and t, as necessary.) Hereare the answers I put in that seem to be incorrect: Bill :3.2-4.9t^2m Ted: 1+3.8t-4.9t^2 m PLEASE HELP - THANKS Bill steps off a 3.2 m high divingboard and drops to the water below. At the same time, Ted jumpsupward with a speed of 3.8 m/s from a 1.0m high diving board. Choosing the origin to be at the water'ssurface, and upward to be the positive x direction, writethe x-versus-t of motion for both Bill and Ted.(Use g and t, as necessary.) Hereare the answers I put in that seem to be incorrect: Bill :3.2-4.9t^2m Ted: 1+3.8t-4.9t^2 m PLEASE HELP - THANKS

Explanation / Answer

I think you are correct; except you may leave g foracceleation. For Bill: x1 = xo + u.t1 +0.5gt12                  = 3.2 +0 - 0.5g.t12                  = 3.2 - 0.5gt12 For Ted: x2 = xo + u.t2 +0.5gt22                  = 1.0 +3.8t2 - 0.5g.t22                                    = 1.0 +3.8t2 - 0.5g.t22                  

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