Answer:
V = 1.1 m/s
Explanation:
given,
mass of railroad car 1 , m = Β 30,000. kg
travelling at the speed , u = 2.2 m/s
mass of car 2, M = Β 30,000. kg
initial speed, u' = 0 m/s
final speed of the car after collision, V = ?
using conservation of momentum
Β m u + M u' = Β (M+m)V
Β 30000 x 2.2 + 0 = (30000 + 30000) V
Β 60000 V = 66000
Β [tex]V= \dfrac{66000}{60000}[/tex]
Β Β Β Β Β V = 1.1 m/s
he velocity of the two cars is equal to V = 1.1 m/s
