On dry land, an athlete weighs 67.2 kg . The same athlete, when submerged in a swimming pool and hanging from a scale, has an "apparent weight" of 2.50 kg . Find the total volume V
of the submerged athlete.

Aparticle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. find (a) the vector position of the particle at any time t (where t is measured in seconds), (b) the velocity of the particle at any time t, (c) the position of the particle at t = 7.00 s, and (d) the speed of the particle at t = 7.00