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x=Vot+1/2 at²=5*20+1/2 1*20²
x=300m RESP.
b) Vo=5 m/s ; a=1 m/s² ; t=10s ; Vf=?
Vf=Vo+at=5+1*10
Vf=15m/s RESP.
c)Vo=5 m/s ; a=1 m/s² ; t=8s ; x=?
x=Vot+1/2 at²=5*8+1/2 1*8²
x=72m RESP.