Need help

Question 10 1 pts Dexter throws a baseball vertically into the air with an initial velocity of 25 m/s. The total time of the baseball in the air is Question 11 1 pts A stone is dropped from the top of an 87.2 m building. The velocity of the stone just before it reaches the ground is _ _m/s [down]. 1.36 Question 12 1 pts Use the following information to answer the question 60 40 dt graph.jpg position (m) 20 time (s) The velocity of the object, using one significant digit, is m/s