Question

Obi-wan is on a spacecraft with a battle droid (mass = 15.00). Obi-wan uses the "Force" to compress a spring (k = 1.20 * 10^3 N/m) from the spacecraft 3 meters. The spring is released right next to the droid, causing the droid to slide backward. The coefficient of kinetic friction between the droid and the ground is 0.500, and the gravity is similar to the surface of the earth's (g = 9.81 m/s^2). What is the magnitude of final linear momentum of the battle droid 5 seconds after they've left contact with the spring?
Answer should be p = 26.7 kg * m/s

Answer 1