Respuesta :

Answer:

Its speed would be 122.5m/s

Step-by-step explanation:

Hope this helps

Answer:

false

Step-by-step explanation:

v=1/2 a t2 t=5s a=9.81m/s2 v=122.625 m/s. ... Suppose a rock is dropped off a cliff with an initial speed of 0 ms What is the rocks speed after 3 seconds in ... The acceleration of gravity is 9.8 m/s2 Speed after 3 sec = (9.8 x 3) = 29.4 m/s.