Answer
1.0 s.
Explanation
Starting from rest, distance is (1/2)gt^2. Solving 4.9 = 4.9t^2 gives t = 1.0 s.
Home / Library / Gaokao essentials: original practice / Synthetic flashcard
A ball is dropped from rest and falls 4.9 m. With g = 9.8 m/s^2 and no air resistance, how long is the fall?
Study flashcard from the deck Gaokao essentials: original practice.