Question

List the three equations of motion.

Answer 1

The equations of motion relate to the following five quantities:

u - initial velocityv - final velocitya - accelerationt - times - displacement

Of the above u, v, a, and s are vector quantities. As such, remember to make vectors going in one direction positive and vectors in the opposite direction negative.

Time (t) is a scalar quantity.

If any three of the five quantities are known then the other two may be calculated using the following three equations:

v = u + ats = ut + ½at2v2= u2+ 2as

Answer 2

every force have have equal and opposite reaction