A 12.0-g bullet is fired horizontally into a 120-g wooden block that is initially at rest on a frictionless horizontal s

[answerhappygod]

A 12.0-g bullet is fired horizontally intoa 120-g wooden block that is initially at rest on africtionless horizontal surface and connected to a spring havingspring constant 140 N/m. The bullet becomes embeddedin the block. If the bullet-block system compresses the spring by amaximum of 71.5 cm, what was the speed of the bulletat impact with the block? _______m/s
The front 1.20 m of a 1,250-kg car isdesigned as a "crumple zone" that collapses to absorb the shock ofa collision.
(a) If a car traveling 29.0 m/s stops uniformlyin 1.20 m, how long does the collision last? ______s(b) What is the magnitude of the average force on the car? ____N(c) What is the magnitude of the acceleration of the car? Expressthe acceleration as a multiple of the acceleration ofgravity. _____g
Please answer and I will rate thank you!!!!