Amusement+Park+Presheet

Here are some helps for the PreSheet to Hershey - Enjoy!! CRuths

[|Pictures from May 2008]

Kinematics 1. v = x/t 2. v = at 3. x = 1/2 at^2 4. x = d/t b. v(i) + v (f) /2 5. same as 3 6. v(f) = v(i) + at b. v(ave) x t 7. v=x/t 8. v = x/t 9. x = v(i) + 1/2at^2 10. same as 9 b. v(f)^2 = v(i)^2 + 2ax c. use sin 11. c = 2pr

Newtons Law 1. height/length f x length = mgh 2. 3. F(delta)t = m (delta)v 4. Vector diagram 5. t b. v c. F(c) d. Friction = mg friction = (Mu) x Normal force 6. P(before) = mv b. P(before) = mv c. d.

7. Vector diagram b. c. 8. p(i) = mv b. p(f) c. impulse = (delta)p d. J = F (delta) t e. force 9. a = (delta) v/ t b. F = ma c. d. Ft = (delta) mv = (delta) P

Swinging and Spinning

1. tan (angle) = mgR/mv^2 b. T=mg/sin(angle) 2. tan (angle) = gR/v^2 b. T = mg/sin (angle) 3. tan (angle) = gR/v^2 b. T = mg/sin (angle) c. d. T = 4. see 2 5. F(friction) = mg b. F(friction) = (mu)N c. N = mv^2/R 6. F(friction) b. N c. v 7. (mu)N = mg 8. v b. F(friction) = mg c. F(c) = mv^2/R d. Mu = F(friction) /N N=F(c) e.

Roller Coaster Energy units = Joules PE = mgh h=height KE = 1/2 mv^2 Total E = PE + KE F(centripetal) = mv^2/r F(track) = +- F(weight) + F(centripetal) Force factor = F(track)/F(weight)
 * 1) 3-4 Mass = 50 kg