Question

A ball is thrown vertically upward with an initial velocity of \( 20 \, \text{m/s} \). Calculate the time taken for the ball to reach its maximum height.

• A. \( 2 \, \text{s} \)
• B. \( 4 \, \text{s} \)
• C. \( 1.5 \, \text{s} \)
• D. \( 3 \, \text{s} \)

Hint:

When solving problems involving vertical motion, always remember that gravity acts downward, so the acceleration will be negative when the object moves upward.