Question

PROBLEM 2 (5 points). Momentum and Mechanical Energy conservation A rifle bullet with mass 150 g strikes and embeds itself in a block with mass 1000 g that rests on a frictionless, horizontal surface and is attached to a coil spring. The initial velocity of the bullet was 700 m/s. The impact compresses the springy a distance x. The spring constant is 550 N/m. The spring is ideal. a) Find the magnitude of the block's velocity (with the bullet stuck inside) after the impact, just before it starts compressing the spring. b) Find the distance x the spring will be fully compressed after the impact. c) Calculate the initial total mechanical energy of the system (bullet and block) before impact d) Calculate the final total mechanical energy of the system (bullet and block) after impact e) Was the collision elastic or inelastic? Justify using the kinetic energies of the bullet and block before and after the collision (before compressing the spring). oulk 1ら iay S0Mm

Answer 1

D. 0,015 x 다00 01 550 bus u 2 0:01 失-3575T

r 2-3 x lost 62 211 24.12 fs 9106 mi