Use the following information to answer the next question. Ballistic pendulums used to be used to determine a firearm's muzzle velocity. A ballistic pendulum is constructed by hanging a block of wood by two wires; the wires allow the block to swing freely like a pendulum. A 3.50 kg rifle fires a 30.0 g bullet into a ballistic pendulum as shown in the diagram below. The bullet buries itself in the 2.5 kg ballistic pendulum, and they rise to a vertical height of 0.650 m. - 0.70 m 11) Determine the bullet's muzzle velocity (i.e., speed the bullet leaves the rifle barrel). A. 262 m/'s B. 298 m/s C. 301 m's D. 238 m's 12) The following statements all relate to a collision between any two objects on a horizontal frictionless surface. Which of these statements is always true? A. The kinetic energy of each object before and after the collision is the same. B. The momentum of each object before and after the collision is the same. C. The total momentum of the two objects before and after the collision is the same. D. With respect to the surface, the gravitational potential energy of each object before and after the collision increases Numerical Response A 1000 kg car travelling east at 29.4 m's on an icy road hits a parked truck that has a mass of 1500 kg. Immediately after the collision, the car was moving at 20.0 m/'s in the direction 20.0 N of E, and the truck was moving at an unknown speed in the direction 45.0 S of E 13) The magnitude of the total momentum before the collision, expressed in scientific notation, is a.be x 10d kg.m/s. The values of a, b, c, and d are and