Question

What is the instantaneous velocity of a freely falling object 11 s after it is released from a position of rest

Answer 1

Answer:

v= -107.8 m/s

Explanation:

• Since the object is in free fall, this means that is moving at an accceleration equal to the one due to gravity.
• Since it starts at rest, we can apply the definition of acceleration, rearranging terms as follows:

       $v_{f} = v_{o} + a*t = a*t = -g*t = 9.8m/s2*11s = -107.8 m/s (1)$

• (Assuming as positive the upward direction)