v0 = 0
S5 - S4 = 27 m
zatem
[ a*( 5 s)^2]/2 - [ a*(4 s)^2]/2 = 27 m / * 2
25 a s^2 - 16 a s^2 = 54 m
9 a s^2 = 54 m
a = 54 m : 9 s^2 = 6 m/s^2
==========================
czyli
S7 = 6 m/s^2 * ( 7 s)^2/2 = 0,5* 6 m/s^2 * 49 s^2 = 147 m
S7 = 147 m
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v0 = 0
S5 - S4 = 27 m
zatem
[ a*( 5 s)^2]/2 - [ a*(4 s)^2]/2 = 27 m / * 2
25 a s^2 - 16 a s^2 = 54 m
9 a s^2 = 54 m
a = 54 m : 9 s^2 = 6 m/s^2
==========================
czyli
S7 = 6 m/s^2 * ( 7 s)^2/2 = 0,5* 6 m/s^2 * 49 s^2 = 147 m
S7 = 147 m
===========