Khan/khan-exercises — Issue #7098: Kinematic equations - Two acceptable solutions
Author: KhanBugz
Created: 2011-11-26 17:56:55+00:00
State: open
Labels: firefox, other, xp

Reporter: mathfigure@gmail.com

This problem has two acceptable solutions:
vi = -15.9[m/s], t=17[s]
and
vi = +15.9[m/s], t=19.0255[s]

So, either 17[s] or 19[s] should be acceptable.

Regards.

[kinematic_equations.html?seed=55&problem=accelerated](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=55&problem=accelerated&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=55&problem=accelerated&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5B%5C%2217%5C%22%2C%5C%22m%2Fs%5C%22%5D%5D%22%2C115%5D%5D)

[[["17","m/s"]]]

Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20100101 Firefox/8.0

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