What happens to the motion of an object when the forces acting on it are balanced? a. the motion changes. b. the motion does not change. c. the motion speeds up. d. the motion slows down.

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

Most of the volume of an atom is occupied by the

The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?