a 9000 kg railroad car moving at 3 m/s strikes a stationary 5000 kg railroad car .what is the momentum of the 9000 kg railroad car before the collision?
forget the 2nd car.
p = mv
You have m and v.
100
Momentum is the product of an object's mass and its velocity. To find the momentum of the 9000 kg railroad car before the collision, you need to multiply its mass by its velocity.
Momentum (p) = Mass (m) × Velocity (v)
The mass of the 9000 kg railroad car is given as 9000 kg, and its velocity is given as 3 m/s.
So, the momentum (p) of the 9000 kg railroad car before the collision is:
p = m × v
= 9000 kg × 3 m/s
= 27000 kg·m/s