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Hi, So I have this picture of a ramp with a ball going down. I have figured the average velocity, acceleration, and total distance. Now I have to find out the instantaneous velocity at half the distance? I a not sure how to find the instantaneous velocity, if anyone can help that would be great!

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Half way down, the ball has acquired half its maximum kinetic energy, so the velocity is sqrt(1/2) = 70.71% of the final velocity, rather than half the final value.
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