A ball player hits a home runm and the baseball clears a wall 8.00 m high located 112.0 m from home plate. The ball is hit at an angle of 38 degrees to the horizontal, and the air resistance is negligible. Suppose the ball is hit at a height of 1.2 m above the ground. What is the initial speed of the ball? The acceleration due to gravity is 9.81 m/s^2. Answer in units of m/s.

Part 2:

How much time does it take for the ball to reach the wall? Answer in units of s.

Part 3:

1. Discover the speed of the ball when it reaches the wall. Answer in units of m/s.

2. What is the value of the electric dipole moment induced in the sodium atom?

3. What is the value of the electric field at the position of the alpha particle? (What causes this electric field? Is it reasonable for you to use the approximate large-distance result for this solution? Why or why not?)

4. What is the value of the force (vector) exerted on the neutral sodium atom with the alpha particle?

5. (There are no calculations in this part—only physical reasoning is required!) Let’s say that the sodium atom was now replaced by a sulphur atom.