In the earths reference frame, a tree is at the origin and a pole is at x = 30 km. Lightning strikes both the tree and the pole at t = 10 ms. The lightning strikes are observed by a rocket traveling in the x-direction at 0.50c. a. What are the spacetime coordinates for these two events in the rockets reference frame? b. Are the events simultaneous in the rockets frame? If not, which occurs first?

Momentum, center of mass Tuesday, October 3, 201:55 PM Momentum denoted by p. It is a vector (m*v) The velocity of a body is the velocity of the center of mass of the object In order to calculate COM for 2 dimensions: - Find COM line for x - Find COM line for y - Use intersection as COM In order to calculate COM for 3 dimensions: - Find COM plane for x - Find COM plane for y - Find COM plane for z - Use intersection of all three as COM - Use intersection of all three as COM Combining conservation of energy and conservation of momentum The only solution that fulfills both of these requirements for the Newton's Cradle is where the balls dropped is equal to the balls shot out on the other side. N