A 1500 kg car is traveling at 15 m/s to the south collides w/ 4500 kg truck that is initially at rest at a spotlight. The car and the truck stick together and move together after the collision. What us the final velocity of the two vehicle mass?

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?