What is the term for the maximum point of a wave from the baseline?

Two cars collide, lock bumpers and move together after the collision.this collision is known as perfectly inelastic collision.

Perpendicular to the wave motion 

Answer175 to 225 degreeswhite

Repeated trials allow you to calculate a mean which can reduce the effect of random errors to make your results more precise.your results will also be reproducible therefore if someone else did the same experiment they'd get the same results which would make your results more reliable.