Respuestas

2011-11-15T19:12:32+01:00

a = 2.5m/s2

t = ?

s = 125m

vk = ?

 

s = at^2/2

125 = 2.5t^2/2   x 2

250 = 5t^2 /5

t^2 = 50

t = 7s

vk = a x t

vk = 2.5 x 7

vk = 17.5 m/s