Question

Isabella drops a pen off her balcony by accident while celebrating the successful completion of a physics problem.

Assuming air resistance is negligible, how many seconds does it take the pen to reach a speed of 19.62 ?​

Answer 1

Explanation:

Answer. As the pen falls off, its motion starts from rest. Substitute, u = 0 m/s and a = 9.8 m/s^2. Therefore, the pen will take 2 s to reach a speed of 19.62 m/s.