Given Information:
Acceleration of gravity = g = 9.8 m/s²
Time period = t = 3 seconds
Required Information:
velocity = v = ?
Answer:
v = 29.4 m/s
Explanation:
As we know the velocity of an object under free fall assuming that the object was initially at rest is given by
v = -gt
Where minus sign indicates that the object is moving downward
v = -9.8*3
v = -29.4 m/s
Therefore, the rock will be falling at the speed of 29.4 m/s after 3 seconds.
