Problem: The speed of a bullet can be measured by firing it at a wooden cart initially at rest and measuring the speed of the cart with the bullet embedded in it. A 12-g bullet fired at a 4.5 -kg cart. After the collision, the cart rolls at 1.5 m/s.
Part A: What is the bullet's speed before it strikes the cart?
I need help to determine the bullet's speed before it strikes the cart.