Mr. Wadson · textbook
Chapter 3 · Accelerated Motion textbook assignment
pp.66-67 #1-10 · pp.69-71 #16-22 · p.72 #23-26 · p.78 #41-46
Your assignment
Questions 1–10, 16–22, 23–26 and 41–46, across pages 66–78. These are the extra Physics pages photographed after Chemistry. Prompts below are brief original companions; keep the book for the full figures.
Assigned textbook questions32
1Question 1Use Figure 8 to create a motion diagram with velocity arrows.Open2Question 2Use Figure 9 to identify steady speed, positive acceleration, and the steepest negative acceleration.Open3Question 3Use Figure 9 for average acceleration during 0–5, 15–20 and 0–40 s.Open4Question 4Sketch the elevator’s three-stage graph using 0.5 m/s² for 2 s, 1.0 m/s for 12 s, then 0.25 m/s² downward for 4 s.Open5Question 5A racer increases forward velocity from 4.0 to 36 m/s in 4.0 s. Find average acceleration.Open6Question 6The racer slows from 36 to 15 m/s in 3.0 s. Find average acceleration.Open7aQuestion 7aA bus moves west at 25 m/s and stops in 3.0 s. Find average acceleration.Open8Question 8A car changes from 3.0 m/s downhill to 4.5 m/s uphill in 2.5 s. Find average acceleration.Open9Question 9An eastward jogger slows from 3.5 to 0.75 m/s over 10.0 s. Find average acceleration.Open10Question 10Continental drift changes from 1.0 to 0.5 cm/year over one year. Find average acceleration using those units.Open16aQuestion 16aA golf ball starts toward the hole at 2.0 m/s and slows at 0.50 m/s². Find its velocity after 2.0 s.Open16bQuestion 16bFor the same golf ball, find velocity after 6.0 s.Open17Question 17A bus moving east at 30.0 km/h increases its speed at 1.5 m/s² for 6.8 s. Find final velocity.Open18Question 18A car starts from rest and accelerates at 5.5 m/s² north. Find time to reach 28 m/s north.Open19Question 19A car slows from 22 m/s to 3.0 m/s at 2.1 m/s². Find elapsed time.Open20Question 20Find each cyclist’s displacement from Figure 13.Open21Question 21Find each walker’s displacement over 4 s from Figure 14.Open22aQuestion 22aSketch the car reaching 25 m/s west from rest in 12 s.Open22bQuestion 22bFind displacement for the westward car reaching 25 m/s from rest in 12.0 s.Open22c-dQuestion 22c-dSketch a steady-speed car covering the same distance in the same time, and explain its speed.Open23Question 23A skateboarder starts uphill at 1.75 m/s and slows at 0.20 m/s². Find time to the turnaround.Open24Question 24A racer slows from 44 to 22 m/s in 11 s. Find distance.Open25Question 25A car speeds up uniformly from 15 to 25 m/s over 125 m. Find time.Open26Question 26A cyclist finishes at 7.5 m/s north after 4.5 s and moves 19 m north. Find initial velocity.Open41aQuestion 41aA brick is dropped. Find velocity after 4.0 s.Open41bQuestion 41bFor that brick, find the distance fallen in 4.0 s.Open43Question 43A ball is dropped through 3.5 m. Find impact speed.Open44aQuestion 44aA ball launches up at 22.5 m/s. Find maximum height above release.Open44bQuestion 44bThe ball returns to its launch height. Find total flight time.Open45bQuestion 45bA flipped coin rises 0.25 m above release. Find launch speed.Open45cQuestion 45cThe coin is caught at its release height. Find total flight time.Open46Question 46Sketch velocity–time and position–time for a ball dropped from 1.5 m, returning to 0.75 m then 0.25 m after bounces; down is positive.Open
Questions4
7bQuestion 7bIf the bus takes twice as long to stop, how does its average acceleration change?Open16cQuestion 16cDescribe the golf ball’s motion and draw a motion diagram.Open42Question 42Repeat question 41 with the opposite direction defined as positive.Open45aQuestion 45aState the coin’s velocity and acceleration at its highest point.Open