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October 19, 2011

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If a sprinter runs with constant acceleration for the first 25 yd of a 100 yd-dash and then runs the rest of the race at constant velocity. What would his constant acceleration have to be if he is to run the race in 10 sec? Thanks.

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Re. problem # 2, ellipse, algebra 2

For Re. problem # 2, ellipse, algebra 2
For Re. problem # 2, ellipse, algebra 2
For A bird traveling at 20 m/s wants to hit a waiter 10 m below with his droppings. In order to hit the waiter, the bird must release his dropping some distance before he is directly overhead. What is the distance?
For A lorry weighing 10t moving at 5 m/s crashes into a car moving at 8 m/s. The lorry creashes into the car and the duration is 20 m/s. What force acts on the car, if the speed of the car after collision is 10m/s.
For Not using calculus if the trajectory is gven by y= 390x -17x(squared) how do you calculate max height

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