A 0.248 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.148 kg puck moving initially along the x axis with a speed of 2.82 m/s. After the collision, the 0.148 kg puck has a speed of 1.82 m/s at an angle of 25◦ to the positive x axis. Find the fraction of kinetic energy lost in the collision.

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s