Respostas

2013-10-27T12:02:53-02:00
S= S0 + 0VT + (AT²)/2
20= (16a) 2
20 = 8a
a= 2,5 m/s²

F=MA
F= 5. 2,5= 12,5N

V=0 +2,5. 20= 50 m/s
S= (2,5 . 20²)/2
S= 1000/2
S= 500m