An apple falls from a tree and hits the ground 5 meters below. It hits the ground with a speed of about
A) 20 m/s.
B) 15 m/s.
C) 5 m/s.
D) 10 m/s.
E) not enough information given to estimate

Question

Quizplus · Accepted Answer

Using the equation of motion $ v^2 = u^2 + 2gh $, where $ u = 0 $ (initial velocity), $ g = 9.8 \, \text{m/s}^2 $, and $ h = 5 \, \text{m} $, we find $ v \approx 10 \, \text{m/s} $.

An Apple Falls from a Tree and Hits the Ground