1. A car a mass of 400-kg travels at 20 m/s. teh car collides with a stationary truck of mass 1600-kg. The two vehicles interlock as a reslt of teh collision. what is the velocity of the car-truck system?
numbers plugged in:
velocity after collision in units:
2. a 50-kg projectile leaves a 2000-kg launcher with a velocity of 800 m/s forward. What is teh recoil velocity of the launcher?
Numbers plugged in:
Velocity after collision in units: