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I drop a ball from rest off a really high cliff. Assume g is -10 m/s2....

I drop a ball from rest off a really high cliff. Assume g is -10 m/s2. (a) How fast and in what direction does the ball go after 2 seconds? (b) What is the ball’s acceleration after 2 seconds of fall? (c) But why?! The ball is going 20 m/s after 2 seconds, so why is its acceleration a different value??

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