A 0.2-kg bullet is fired into a 1.8-kg pendulum bob as shown in the diagram to the right. The bullet gets stuck inside the pendulum bob after striking it with an unknown initial horizontal velocity. If the pendulum bob is observed to be moving at 10 m/s immediately after the collision, what was the speed of the bullet just before it collided with the pendulum bob? h = ? Vi = ? 100 m/s 90 m/s 75 m/s 50 m/s​

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)