Minta tolong jawab'in jo 3-5 dong dikumpulkan besok

3.
t=2jam
s=180km
v=s/t=180/2=90m/s
4.
10/(15-10)=10/5=0.5m/s^2
5.
v=10+2t
s=so+integral(10+2t) dt
s=10t+t^2
t=5s ==> s=50+25=75m