A loaded gun is dropped on a frozen lake. The gun fires, with the bullet going horizontally in one direction and the gun sliding on the ice in the other direction. The bullet's mass is 0.04 kg, and its speed 305 m/s. If the gun's mass is 1.7 kg, what is its speed (in m/s)? l:l m/s Neeanelp? [/2 Points] DETAILS OBINPHYSB 3.P.023. MY NOTES ASK YOUR TEACHER | PRACTICE ANOTHER A 39 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals 8,850 N/m. (a) By how much would the spring be compressed by the child if she simply balanced herself vertically on the pedals of the stick? (Give your answer in cm.) $an (b) How much energy (in J) is stored in the spring under this circumstance? E] Need Help? [/2 Points] DETAILS OBINPHYS8 3.P.032. MY NOTES ASK YOUR TEACHER | PRACTICE ANOTHER A 9,700-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 5 m/s. Compute how much kinetic energy was "lost\" in this inelastic collision. :3