2. A rock is thrown upward with an initial speed of 15 m/s on Earth. a. Make a well-labeled diagram of the b. Make a list of given quantities and situation. quantities to find, labeled with units and appropriate algebraic signs (+, -). c. What is the acceleration of the rock? d. Calculate the rock's height after 1 sec. e. Calculate the time required to reach an upward speed of 3 m/s. f. Calculate the time required to reach a downward speed of 5 m/s. 3. A ball punted vertically has a hang time of 3.8 seconds. What was its initial velocity? Make a welllabeled diagram of the situation. Make a list of given quantities and quantities to nd, labeled with units and appropriate algebraic signs (+, -)