1. Neglecting air resistance, the motion of an object moving vertically near Earth's surface surface is determined by acceleration due to gravity, which is approximately 9.8 m / .52. Suppose a stone is thrown vertically upward at t = 0 with the velocity of 40 m/s from the edge of the cli that is 100m above a river. (1) Find the velocity v(t) of the object, for t 2 0. 1)) Find the velocity 5(15) of the object, for t Z 0. 2. Suppose the interval [2, 6] is partitioned into 4 subintervals. What is the subinterval length A33? List the grid points :50, 3:1, $2, 333 and 534. Write and evaluate, the left, right, and midpoint Riemann sums for at) 2 $2. 3. Evaluate the following expressions