Oblicz z jaka predkoscia porusza sie cialo po 4s jezeli przyspieszenie wynosi 2m/s2
Oblicz droge pokonana przez cialo w ciagu 5 s jezeli przyspieszenie wynosi 2m/s2
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a=delta v /t
vk=at
vk=2 x 4
vk=8m/s
s=at*2/2
s=2 x 5*2/2
s=25m
a = 2m/s^2
v = a*t = 8m/s
t = 5s
a = 2m/s^2
s = (at^2)/2 = 2*25/2 = 25m