1 / 10

page 41 #49 and #54

page 41 #49 and #54. }. }. a. c. c. d. b. c. a. The greatest velocity is at 48 seconds. b. Velocity is constant from 90 seconds to 108 seconds. c. Acceleration is constant from 0 to 38 seconds and 65 to 83 seconds. The acceleration is zero from 90 to 108 seconds (see b.).

lcoffee
Télécharger la présentation

page 41 #49 and #54

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. page 41 #49 and #54

  2. } } a. c. c. d. b. c. a. The greatest velocity is at 48 seconds. b. Velocity is constant from 90 seconds to 108 seconds. c. Acceleration is constant from 0 to 38 seconds and 65 to 83 seconds. The acceleration is zero from 90 to 108 seconds (see b.). d. Greatest acceleration (Greatest Slope) is from 65 to 83 seconds. page 41 #49

  3. 17 17 16 16 12 13 14 4 15 7 8 9 10 11 15 3 4 1 2 3 4 5 6 1 2 5 5 page 41 #54 On a v vs t graph, the area under the curve is the displacement x. For this graph, EACH BLOCK REPRESENTS 10M/S IN 10 SECONDS X = VT X = 10(10) X = 100m EACH BLOCK REPRESENTS 100m From 0 to 60 seconds ( 1 minute) there are ≈ 17 Blocks ∴ 1700 m From 60 to 120 seconds ( second minute) there are ≈ 5 Blocks ∴ 500 m

  4. Page 41 # 50,51

  5. Page 41 # 50 On an x vs t graph, the instantaneous velocity is tangent to the curve at each point. For a time interval v = Δx / Δt for the triangle formed. a. v(10) = Δx = 3 - 0 Δt 10 - 0 v(10) = 0.3 m/s b. v(30) = Δx = 22 - 8 Δt 35 - 25 v(30) = 1.4 m/s

  6. Page 41 # 50 On an x vs t graph, the instantaneous velocity is tangent to the curve at each point. For a time interval v = Δx / Δt for the triangle formed. c. v between t = 0 and t =5 Δx 1.5 - 0 = 0.3 m/s Δt 5 - 0 d. v between t = 25 and t = 30 Δx 16 - 9 = 1.4 m/s Δt 30 - 25 e. v between t = 40 and t =50 Δx 10 - 19.5 = - .95 m/s Δt 50 - 40

  7. Page 41 # 51 a. Velocity Constant t = 0 to t = 18 seconds constant rate of change b. Velocity Greatest t = 27 seconds slope greatest c. Velocity Zero t = 38 seconds slope = 0 flat line d. Positive direction 0 to 38 seconds Negative direction 38 to 50 seconds

  8. Page 41 52, 53

  9. Page 41 52 b. x = v t v = 44 + 37 t = 27 - 16 = 11 x = 40.5(11) = 445.5m 2 a. second gear a = Δv a = 24 - 14 a = 2.5 m/s2 Δt 8 - 4 fourth gear a = Δv a = 44 - 37 a = 0.64 m/s2 Δt 27 - 16

  10. Page 41 53 first gear a = Δv a = 14-0 a = 4 m/s2 Δt 4 - 0 second gear a = Δv a = 24 - 14 a = 2.5 m/s2 Δt 8 - 4 third gear a = Δv a = 37 - 24 a = 3 m/s2 Δt 14 - 9 fourth gear a = Δv a = 44 - 37 a = 0.64 m/s2 Δt 27 - 16 fifth gear a = Δv a = 52 - 44 a = 0.35 m/s2 Δt 50 - 27 first four gears a = Δv a = 44 - 0 a = 1.6 m/s2 Δt 27 - 0

More Related