Pociag na odc. drogi s=1200m zwiekszyl szybkosc od v0=5m/s do v=25m/s. oblicz przyspieszenie ruchu pociagu.
s = v0t + at2/2
vk = v0 +at ---> at = vk - v0 podkładamy to do wzoru wyżej
2s= 2v0t + (vk - v0)t
2s = t (2v0 + (vk - v0))
t = 2s/2v0 + (vk - v0) = 80s
a=v/t
a = (25 - 5)/80 = 1/4 m/s2
;)
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s = v0t + at2/2
vk = v0 +at ---> at = vk - v0 podkładamy to do wzoru wyżej
2s= 2v0t + (vk - v0)t
2s = t (2v0 + (vk - v0))
t = 2s/2v0 + (vk - v0) = 80s
a=v/t
a = (25 - 5)/80 = 1/4 m/s2
;)