Q1. With what speed should you toss a 130 ball straight up to hit the 15.0 -high roof of the gymnasium if you release the ball 1.10 above the ground? Solve this problem using energy.

Q2. A crate of 45.00 kg tools rests on a horizontal floor. You exert the gradually increasing horizontal push on it and observe that the crate just begins to move while your force exceeds 313 After that you must reduce your push to 208 N to keep it moving at a steady 25.0cm/s. A.) What is the coefficient of static and kinetic friction between the crate and the floor? B.) What push must you exert to give it an acceleration of 1.10 m/s^2? D.) Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the acceleration due to gravity is 1.62 m/s squared. What magnitude push would cause it to move? What will be its acceleration if you maintained the push in part b?