More interested in the steps than the answer. Really confused about converting velocity graphs into distance and acceleration graphs.

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.