A3000 kg freight train traveling at a rate of 2 m/s strikes a stationery 3000 kg freight car and couples up. what is the speed of the 2 cars as they move together after the collision?

1 m/s

Explanation:

Momentum before the collision = momentum after the collision

m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂

(3000 kg) (2 m/s) + (3000 kg) (0 m/s) = (3000 kg) v + (3000 kg) v

6000 kgm/s = 6000 kg v

v = 1 m/s

it will be pushed away from the source of the electric field. a negative charge in a cloud induces a positive charge in the ground below the cloud.

explanation:

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: