Khan/khan-exercises — Issue #13543: Kinematic equations - Kinemetic equations
Author: KhanBugz
Created: 2012-02-10 11:47:27+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: geerthaverkort@hotmail.com

The question:

vi=18.2m/s
a=-18.9m/s²
t=13.6s
vf=?
d=?

Solve for d. Round to the nearest tenth.

If I'm not mistaken the answer is -1500.352m, so rounding to the nearest tenth the answer would be -1500.4m, but excercise claims it is -1500.3m. And while I'm at it, the related videos are no longer there (Projectile motion (part 1) through (part 5)).

[kinematic_equations.html?seed=145&problem=accelerated](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=145&problem=accelerated&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/kinematic_equations.html?seed=145&problem=accelerated&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5B%5C%22-1500.4%5C%22%2C%5C%22m%5C%22%5D%5D%22%2C51%5D%2C%5B%22hint-activity%22%2C%220%22%2C156%5D%2C%5B%22hint-activity%22%2C%220%22%2C166%5D%2C%5B%22hint-activity%22%2C%220%22%2C169%5D%5D)

[[["-1500.4","m"]]]

Mozilla/5.0 (Windows NT 6.1; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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