Andi drops a rock from rest form a guard rail overlooking a valley. What is the velocity of the rock at 11 s? The acceleration of gravity is 9.81 m/s2.

Answer 1

To find the velocity of the rock at 11 s, we can use the kinematic equation:

v = u + at

where:
v = final velocity
u = initial velocity (in this case, the rock is dropped from rest so u = 0 m/s)
a = acceleration due to gravity = 9.81 m/s^2
t = time = 11 s

Plugging in the values:

v = 0 + 9.81 * 11
v = 107.91 m/s

Therefore, the velocity of the rock at 11 s is 107.91 m/s.