Physics 4 items, Will rate you in return, for solving!

Solve the following problems: 1) Deflections. A particle is moving along the x-axis with an initial speed vo = 4.00 [m/s]. It collides with a second particle of identical mass that is at rest, and is deflected with a speed of v = 2.00 [m/s], $ = 30.0 above the x- axis. The second particle deflects at an angle 0 below the 1 2 - X x-axis. What is the angle 0? BEFORE AFTER 2) Sadboi Dukue. Sadboi Dukue was running away from his problems when he suddenly dropped a massive ball. The ball rolled without slipping on a horizontal floor with a ro- tational kinetic energy equal to 50.0 [J]. Assuming that the massive ball is a solid sphere (Icm = MR'), what is its translational kinetic energy? 3) Dukue dropped the ball. Loksin confirms that Dukue dropped the ball with a mass of 1.20 [kg]. The ball hits the floor at 2.40 [m/s] and bounces back at 2.00 [m/s]. The time of contact between the ball and the floor is 0.1 [s]. Assuming an elastic collision and the upward direction being the positive direction, what is the average force that the floor exerts on the ball during the impact? 4) A simple pendulum has a frequency of 0.400 [Hz] for small oscillations on the surface of the Earth. What is the period of the same pendulum on the surface of the moon, where g = 1.62 [m/s2]