Răspuns:
3.
L= F×d
F=G
G= m×G
G= 350kg×10N/kg
G=3500N
F=3500N
d= h
d= 14
L= 49000J
P=L/t
P=49000J/20s
P= 2450W
4.V=54km/h= 15m/s
Ft = 3×10^4N= 3000,N
P= L/t= Ft×d/ t= Ft ×v
P=3000N×25m/s
P=450000W= 0,45MW
1CP = 736W
P=612,24 CP
5.Ft=60kN =60000N
v= 72km/h=20m/s
p= ,L/t
L=Ft ×d
v= d/t d= v×t
P= Ft ×v×t/t/Ft ×v
P= 60000N×20m/s
P=1200000W
P= 1,2MW
