1.V1=X1/t1=120/600=0.2m/s
2.(V2*t2)^2-(V2*t1)^2=(V1*t2)^2
V2^2(*750^2-600^2)=(0.2*750)^2
V2=1/3m/s
3.d=V2*t1=200m
4.cosα=V1/V2=0.2/(1/3)=0.6
α=53°
1.V1=X1/t1=120/600=0.2m/s
2.(V2*t2)^2-(V2*t1)^2=(V1*t2)^2
V2^2(*750^2-600^2)=(0.2*750)^2
V2=1/3m/s
3.d=V2*t1=200m
4.cosα=V1/V2=0.2/(1/3)=0.6
α=53°