An investigation using a fan and a wooden car is shown. which of the following actions will most likely increase the distance the car will travel?
a. increase the speed of the fan
b. add mass to the car
c. decrease the speed of the fan
d. change the direction the car is going.
explain why you choose the answer you did.

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.