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Mathematics 20 Online
OpenStudy (anonymous):

Imagine a ball falling from above and landing in a bush and by that being slowed with a constant acceleration a, over a distance of s=50cm. Find a and determine wether the acceleration under the "slowing/braking" of the ball is directed upwards or downwards. I did calculate a and got a positive number. What is the direction of the acceleration when the ball is slowing?

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