Question

A 0.2 kg ball is dropped from a height of 10 meters. What is the velocity of the ball just before it hits the ground? (Assume \( g = 9.8 \, \text{m/s}^2 \) and neglect air resistance.)

• A. \( 14.0 \, \text{m/s} \)
• B. \( 9.8 \, \text{m/s} \)
• C. \( 20.0 \, \text{m/s} \)
• D. \( 5.0 \, \text{m/s} \)

Hint:

When an object falls freely under gravity, its velocity increases as it falls. The final velocity can be found using the equation \( v = \sqrt{2gh} \) for an object dropped from rest.