Please make sure to be detailed in showing which equation you used and how you converted it into the equation needed.
1. Two identical objects are thrown from the top of a tall building and experience no appreciable air resistance. One is thrown up, and the other is thrown down, both with the same initial speed. Will the two objects have different speeds or the same speed when they hit the street? Explain your answer. (QB)
2. A soccer ball is released from rest at the top of a grassy incline. After 8.6 seconds, the ball travels 87 meters, and 1.0 second after this, the ball reaches the bottom of the incline. What was the magnitude of the ball's acceleration, assuming it to be constant? (QB)
3. A stalled car is being pushed up a hill at constant velocity by three people. What can you say about the net force on the car? Explain your answer. (QB)