Question

A body of mass $ 1.5 \, \text{kg} $ is dropped from a height of $ 20 \, \text{m} $. What is its speed just before hitting the ground? (Assume $ g = 9.8 \, \text{m/s}^2 $)

• A. \( 19.8 \, \text{m/s} \)
• B. \( 14 \, \text{m/s} \)
• C. \( 20 \, \text{m/s} \)
• D. \( 9.8 \, \text{m/s} \)

Hint:

Remember: When an object is dropped from a height, its initial velocity is zero, and its final velocity depends only on the height and gravity.