Aps física

s1.
V= 20 m/s V²=V0+2.a.Δx
Δx= 100 m 20²=0+2.a.100 a= ? 400=200a
V0= 0 a=2 m/s²

2.
V0= 36km/h divididos por 3,6=10m/s Δx = V+V0 Δx= 5.10 t= 10 s Δt 2
Δx= ? Δx = 0+10 Δx= 50m
V= 0 10 2

3.
V0= ? Δx = V+V0 V0= 2m/s a= -? Δt 2
Δx= 1m 1= 0+V0 t= 1s 1 2
V= 0 V0= 2.1

4. x=x0+V0.t+a.t² V=V0+a.t 2 x= 3+2.t-2.t² V=2-2.t 2

5. xtotal= 400m V=x V=400 V= 20m/s t= 20s t 20

6.
V= 12 m/s V=V0+a.t
V0= 4 m/s 12=4+a.4 a= ? 12-4=4a t= 4s 2m/s²=a

V0= 4m/s V=V0+a.t V²=V0+2.a.Δx a= 2m/s²