please read the passage below and answer the questions which follow.

While on patrol, Officer W sees a vehicle driven by D speeding on the highway.Officer W saw many other cars speeding that day, but shedidn'tbother stopping them.Officer W chose to stop this car because something about the driver's "looks" gave her a hunch that the car contained drugs.Officer W puts on her lights and pulls the car over to the side of the highway.Officer W asks for license and registration.She then looks around the car and asks D to open the trunk.D compliers and Officer W finds a locked briefcase in the trunk.Officer W brings the briefcase back to her cruiser to examine it.Seeing this, D immediately jumps out of the vehicle and approaches the officer.Officer W orders D back in the car, when Ddoesn'tobey; she arrests him, searches the vehicle and finds a bag of drugs in the glove compartment.Officer W then proceeds to force open the briefcase which also contains drugs.

1. Was the stop justified?

2. Was the search of the glove compartment or trunk valid?

3. What evidence is admissible, and why?What evidence is inadmissible, and why?

4. What, if anything, would you suggest the officer should have differently in this encounter?