Chapter 2, Problem 72P

& An object moves so that its position changes in the following way: $x\left(t\right)=**\#x2212;100\text{m}+\left(30\text{m/s}\right)t+\left(3.0{\text{m/s}}^2\right)t^2$. (a) What kind of motion is this (constant velocity, constant acceleration, or changing acceleration)? Describe all of the known quantities for this motion. (c) Invent a story for the motion. (d) Draw a velocity-versus-time graph, and use it to determine when the object stops. (e) Use equations to determine when and where it stops. Did you get the same answer using graphs and equations?