정답
1.0 s.
해설
Starting from rest, distance is (1/2)gt^2. Solving 4.9 = 4.9t^2 gives t = 1.0 s.
홈 / 라이브러리 / Gaokao essentials: original practice / AI 플래시카드
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?
덱 'Gaokao essentials: original practice'의 플래시카드.