What is the acceleration of the rock after 3.00 seconds (the rock is falling from a cliff)

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?