Respostas

2013-11-21T18:26:43-02:00
V1= 6m/s
t1=4s
V2=12m/s
t2=7s
∆V = V2-V1
∆V=12 – 6 = 6m/s
∆t=t2-t1
∆t=7-4 = 3s
am= ∆V/∆t
am = 6/3
am=2m/s²
letra e
2 5 2