2. A 0.6 kg green rubber ball is going 20 m/s due east when it collides with a 0.4 kg blue ball which is at rest. During the collision of 0.04 s, the green ball feels a 100 N force. a) What is the direction of the force on the green ball? b) What is the green ball's Impulse due to collision? c) What force must the blue ball have experienced during collision? d) What is the impulse on the blue ball? e) What was total impulse for both balls due to collision?1. A block of wood with a mass of 0.8500 kg slides across the floor toward a 3.50 kg block of wood. Just before the collision, the small block is travelling at 3.15 m/s. Because some nails are sticking out of the blocks, the blocks stick together when they collide. Scratch marks on the floor show that they slid 2.63 cm before coming to a stop. What is the coefficient of friction between the wooden blocks and the floor? 2. A forensic expert needed to find the velocity of a bullet fired from a gun in order to predict the trajectory of a bullet. He fired a 5.50 g bullet into a ballistic pendulum with a bob that had of mass 1.75 kg. The pendulum swung to a height of 12.5 cm above its rest position before dropping back down. What was the velocity of the bullet just before it hit and became embedded in the pendulum bob