A runner starts on a track then runs one lap, ending exactly where she started. What is the displacement of the runner?
Explain.

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points