What are Forces? • Objects require a force to get them moving. A force can be described by its _strength_ (the value) and by the _energy_ in which it acts. • Different types of _forces_ exist. Many of these forces can act on an object at the _Net force_ _Force diagram_. These forces combine to produce a __ force. This force is what influences the motion of that object.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

a) the event horizon, singularity, and the chute located between the two.