Which example provides a complete scientific description of an object in motion? the vibration of the jackhammer broke through the south-facing rock in under 10 seconds. the hockey player sent the puck flying toward the north goal to score the winning point. the tiger had to run at 50 kilometers for hour across the field to catch the zebra. the hiker followed the north trail a distance of two kilometers in thirty minutes.

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.)