If asked to describe a wave, you could say waves are the
a) disturbance of energy in a material.
b) continuous transmission of energy from one location to the next.
c) movement of particles within a medium.
d) repetitive transfer of particles from one medium to another.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

What is the rate of change in a objects position?