2 A kid throws a pencil straight up at
6.33 m/s. How much time does it
take for the pencil to reach
the ceiling, 1.25 m above?
(Unit = s)
Watch your minus signs!

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