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A ball is thrown vertically upward with an initial velocity of $u = 20 \text{ m/s}$. What is the maximum height reached by the ball? Assume $g = 10 \text{ m/s}^2$.
- A.$10 \text{ m}$
- B.$20 \text{ m}$
- C.$30 \text{ m}$
- D.$40 \text{ m}$
Show correct answer & step-by-step solution
Correct answer: B — $20 \text{ m}$
Solution
At maximum height, . Using , we get . Solving for gives .
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