Answer :
Final answer:
Using the kinematic equation for freely falling objects, the speed of a 55kg lead ball dropped from the top of the Leaning Tower of Pisa after falling 39.1m is approximately 27.68 m/s, which rounds to 30 m/s.
Explanation:
To determine the speed of a 55kg lead ball after falling 39.1m from rest, we can use the kinematic equation for freely falling objects:
v = √(2gh)
Where v is the final velocity, g is the acceleration due to gravity (~9.8 m/s2), and h is the distance fallen. Plugging in the values gives:
v = √(2 * 9.8 m/s2 * 39.1 m)
v = √(766.36 m2/s2)
v ≈ 27.68 m/s
Therefore, the correct answer is (c) 30 m/s, when rounded to the nearest whole number as per the options provided.
