if the pointy thingy in your compass is pointing north, that means it's being (pulled toward) something near Earth's north pole
Answer:
Mass , momentum and mechanical energy
Explanation:
There are two types of collision.
1. Elastic collision: in case of elastic collision no energy is loss in form of heat and sound .
The momentum and the kinetic energy is conserved.
2. Inelastic collision: in case of inelastic or partially elastic collision, some of energy is lost in form of heat or sound. Here momentum and mechanical energy is conserved.
Mass of a system is always conserved.
Speed. units m/s
Because you want to know how fast he can run without involving any direction thus the best is speed
speed = distance / time