Oh okay so.
a) Total momentum before collision = momentum after collision
Momentum before collision:
= 10,000 * 15 + 5000 * 0
= 150, 000 kgms-1
Momentum after collision:
(10, 000 + 5000)* = 15000 v
v = velocity after collision
Since momentum is conserved.
15, 000*v =...
Homework Statement
A single runaway train engine with a mass of 10 000kg is traveling at 15 m/s. The runaway engine collides and joins with a stationary carriage of 5000kg, which as not had brakes applied. After an impact of 0.5s, the engine and carriage then continue along the track as one...