1. The problem statement, all variables and given/known data a 50 g bullet hits and becomes embedded in a wooden block of as 450 g which is at rest on a surface (μ = 0.41) and is attached to a spring bumper. The block and bullet compress the spring bumper a distance of 20 cm. Is the spring constant is 250 N/m find initial speed of bullet? how much energy has been lost in the collision? 3. The attempt at a solution a) mbvb +mwvw=mtvc (0.05 kg)vb=(0.5kg)(4.47m/s) vb=44.7m/s b) ET2= 1/2(0.5 kg)(4.47 m/s)^2 ET2= 4.995 J ET1= 1/2(0.05 kg)(44.7m/s)^2 ET1= 49.95 J ET1-W=ET2 W= 44.957 J How would i represent this in a percentage?