Question

A ball is dropped from a height of 20 m. What is its velocity just before hitting the ground? (Take \( g = 9.8 \, \text{m/s}^2 \))

• A. \( 10 \, \text{m/s} \)
• B. \( 14 \, \text{m/s} \)
• C. \( 20 \, \text{m/s} \)
• D. \( 18 \, \text{m/s} \)

Hint:

Remember: For free fall, use the equation \( v^2 = u^2 + 2gh \), where \( u = 0 \) for an object dropped from rest.