The answer for the above question is avulsion.
Alvusions is a serious soft tissue injury, happens when a portion of the skin and sometimes other soft tissue is partially or completely torn away, often damages deeper tissues causing significant bleeding, sometimes a violent force may completely tear away a body part which is known as amputation.
The box stopped moving because the force stopped pushing . The average speed of the box would be 5 meters per second
The correct answer is D. for sure.