Question

At the end of 2 seconds of free fall an object released from rest will have a speed of A. 5m/s B 10m/s C 15m/s D none of the above

Answer 1

final velocity = initial velocity + (acceleration due to gravity x time)

final velocity= 0 m/s +(-9.8 m/s^2)(2 s)

final velocity = -19.6 m/s or 20 m/s

answer (D)

Answer 2

thank you I couldn't remember the formula