Question

A rock is dropped from a cliff that is 80 m above the ground. What is the velocity of the rock when it hits the ground? (hint: acceleration due to gravity g = 9.81 m/s2)

Answer 1

45.1 m/s

Step-by-step explanation:

use the equation v = u + at substitute the values v = 0 + 9.8×4.6 v = 45.08 round to about 3 s.f v = 45.1 m/s I do apologize if I'm incorrect.