Is the distance and direction of an object's change in position from the starting point. a. speed b. displacement c. velocity d. rate

B. displacement is the answer.

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.