1- What are the x and y coordinates of the center of mass of the object on the right? 21 4L 3L 4L 2L 21 2- A baseball (mass = 0.20 kg) is pitched at 25 m/s towards a batter. The batter hits the ball, sending it directly back to the pitcher at 35 m/s. a. What is the impulse delivered by the bat to the ball? b. If the collision between the bat and the ball lasted two thousandth of a second, what was the average force of the bat on the ball? Assume the weight of the ball is small compared to force due to the bat. 3- A one dimensional collision occurs between a cart of mass 12 kg moving to the right at 3 m/s and a block of mass 4 kg moving to the left at 12 m/s. After the collision, the 4 kg block moves to the right at 3 m/s. a. What is the velocity of the cart after the collision? b. If the collision lasts 0.020 s, find the average force on the cart? c. Find the average force the cart exerts on the block during the collision. d. How much kinetic energy is lost during the collision? This lost kinetic energy is converted to thermal energy and the energy carried by the sound waves