Solutions to Midterm Review Sheet - Reminder Tutoring

Tutoring
Room 203 - Period 5 - With Ms. Page
Room 606 - Period 6 - With Ms. Pellegrino (while lab is in session)

1. Arrow up and to the right (use the parallelogram method)
2. 44m (use d = Vit + 1/2at^2, where a = 9.8, t = 3, Vi = 0)
3. 0 Degrees (180 degrees is minimum resultant, 0 degrees is maxiumum)
4. 100N (use change in velocity - 10m/s, over change in time - 1.5 s to find acc., then multiply by mass to find the force)
5. DE (this is where the slope of distance v. time is NOT constant, so velocity must be changing)
6. 40m (use Vf^2 = Vi^2 + 2ad)
7. .2h (use distance = average velocity * time)
8. 1 x 10^ -2 N (mass of insect x velocity of insect)
9. F (Force of friction only relies on Normal force, and coefficient of friction)
10. 10 m/s^2 (use v^2/r, NOT mv^2/r, because we are finding acceleration, not force)
11. 2.0s (Find the average acceleration (Vf + Vi)/2 , then use d = V*t to find t)
12. Arrow from the box, down and to the left, parallel to the plane (friction always opposes motion)
13. decrease (remember because F = Gm1m2/r^2, the distance r plays a greater factor)
14. copper (its coefficient is the smallest value).