A solid steel ball is dropped from a great height and when its speed reaches 20 m/s its acceleration downward is 7.35 m/s2 . What would be the terminal velocity in this situation?
a. 80 m/s
c. 40 m/s
b. 60 m/s
d. 20 m/s
Question 2
A sphere is dropped from a great height and when its speed reaches 20 m/s, its acceleration downward is 8.4 m/s2 . If the drag force is proportional to the square of the speed, what will be its acceleration downward when its speed reached 40 m/s?
a. 2.6 m/s2
b. 4.2 m/s2
c. 8.0 m/s2
d. 0 m/s2 because it has now reached terminal velocity.