A negatively charged ball having a mass of 10 grams falls


A negatively charged ball having a mass of 10 grams falls from rest in vacuum from a height of 3 meters in a uniform vertical electric field of 104 N/C. The ball hits the ground at a speed of 10 m/s.

(a) Is the electric field pointing up or down?

(b) What is the charge on the ball?

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Physics: A negatively charged ball having a mass of 10 grams falls
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