for automobile:
v0=0;a=5s2m
saut(t)=v0t+2at2=25t2
vaut(t)=v0+at=5t
for truck:
vtr=20sm
str(t)=vtrt=20t
saut=str
25t2=20t
t1=0 this is the beginning of the movement
t2=8s
str(t2)=20∗t2=160m
vaut(t2)=5t2=40sm
Answer: a.160 m b.40sm
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