This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Ch. 1 1,5,9,19,29,31,33 P1.1 Prepare: The cars motion is along the xaxis and it slows down after the skid begins. Solve: P1.5. Prepare: Displacement is the difference between a final position x f and an initial position x i This can be written as = = f i , x x x and we are given that x i = 23 m and that x = 45 m. Solve:  f i = x x x Since we want to know the final position we solve this for f . x = + = +  =  f i 23m ( 45m) 22m x x x Assess: A negative displacement means a movement to the left, and Keira has moved left from x = 23 m to x = u 22 m. P1.9. Prepare: We are asked to rank order three different speeds, so we simply compute each one according to Equation 1.1: = distance traveled in a given time interval speed time interval Solve: (i) Toy = 0.15m 0.060 m/s 2.5s (ii) Ball 2.3m = 4.2 m/s 0.55s (iii) Bicycle 0.60m = 8.0 m/s 0.075s (iv) Cat 8.0m = 4.0 m/s 2.0s So the order from fastest to slowest is bicycle, ball, cat, and toy....
View
Full
Document
This note was uploaded on 09/13/2008 for the course PHY 151 taught by Professor Cu during the Spring '08 term at Simpson.
 Spring '08
 CU

Click to edit the document details