Question 1
MotionA palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground?
- A.9s
- B.4.5s
- C.6s
- D.3s
Show the answer and explanation
Answer: D (3s)
Explanation
From rest, h = ½gt2: 45 = 5t2, so t2 = 9 and t = 3 s (g = 10 m s−2).