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Table of ContentsTable of Contents

Chapter 2 Text Graphs

Adapted for CVCA Physicsby

Dick Heckathorn9 Sept 2K+2

pp

Find the velocity in each section of the following position-time graph.

( - 2.5 0 10 -3.8 0 8.8 ) m/s

Press Enter for answers.

Find velocity for the two segments, then the average velocity.

h

km50

h

km100

h

kmvave 75

h

kmvave 03.

2

h

km

h

kmvave 7.66

03.

2

2 Top

Find the average velocity for A-B

sec7

2035 mm s

mmm9.7

sec7

2035

Find the average velocity for B-C

sec3.6

2010 mm s

mmm1.7

sec3.6

2010

pp #3

Find the average velocity for each section.

pp

Find the average velocity for 1st 2.5 s.Find the avg. velocity for 2.5 to 7.5 s.Find vinst for the points A, B, and C.Find vinst when it is equal to zero.

8 m/s

Page 56 pp

Where is the object at t=7.0 sec?Calculate vavg for the 14 seconds.Find vinst at t = 13 s.

-10 m1.4 m/s

pp #1

Objects displacement in first 3.0 sec?Displacement from 3.0 to 5.0 sec?Total displacement in 14 seconds?Vavg from t = 0 to t = 8.0 sec?

200 m 0 0 17.5 m/s

pp #2

Find the total displacement. + 150 m

pp #3

At what time do both cars have the same velocity?At t = 0.4 h, which car is ahead and by how much?At t = 1.0 h, what is the distance separating the two cars? 0.68 hA: 27 km25 km

pp #4

Determine total displacement for the 1st 12 sec. 505 m

pp

Determine the acceleration for each of the five unique intervals.

A: 2.0 m/s2

B: 0 C: -2.0 m/s2

D: 0

E: -1.0 m/s2

Find aavg for interval t = 0 to t = 25 sec and t = 30 to t = 50 sec.Find ainst at t = 25 s and t = 40 s.

Page 67 pp

0.57 m/s2 -0.37 m/s2

0.70 m/s2 -0.30 m/s2

Find ainst at any instant in 1st 12 sec?

0.50 m/s2

ecp #8

Find vavg for the whole trip.Find velocity for each of the 3 intervals.

78 km/h

0

-120 km/h

0

ecp #10

What sections represent uniform vel.?What sections represent at rest?What sections represent acceleration?What is vavg for t = 0 to t = 5.0 sec and for t = 15 to t = 20 sec?What is vinst for t = 3.0 s, 24 sec, and for t = 8.0 sec.

A

B

E

D

C

1.4 m/s 0.6 m/s

1.4 m/s

-0.63 m/s

0

What is ainst at t = 12.5 sec and t = 22 s.

Page 82 ecp #18

Where is the velocity uniform?Where is the acceleration uniform?How far does the car travel after 11 sec and after 25 sec?How far does the car travel during the 13th sec?What is the acceleration in 1st 5 sec and from t = 11 to 14 sec.260 m 1300 m

B DA C60 m

6.0 m/s2 20 m/s2

20 m/s2 -10 m/s2

ecp #20

Find the total displacement. 430 m

ecp #21

At what time is ball at highest point?What is acc when ball is rolling down?What is acc when ball is rolling up?When ball is at rest at top point?How far up the board did the ball go?What is displacement over the 9 s trip?

4.5 s

-2.7 m/s2 -2.7 m/s2 -2.7 m/s21.2 m 0

ecp #22

At t = 0.40 h, which is ahead? How much?What is vavg of train A for 1st 36 min?What is ainst of B at t = 0.30 hr?

B ahead by 2.4 km27 km/hr-20 km/h267 km/h2

What is aavg of A from t = 0.40 to t = 0.70 h?

ecp #23

What is ainst at t = 3.0 s, 7.0 s, 11.0 s?How far does the car travel in 1st 5 s, 1st 9 s, and 1st 13 s?

0

6.3 m/s2

-11 m/s2

100 m 230 m 320 m

Find distance between A and B at t = 5.0 s? -3.3 m/s22.5 m

6.7 m/s2

Page 84 ecp #24

Find acc of B during final 3 sec.Find vavg of A in 1st 5 sec.Find ainst of A at t = 7.0 sec. 12 m/s

ecp #25

Prove that police car overtakes sports car when t = 60 s.Find vavg of police car for 1st 60 sec.Find distance between cars when t = 30 secFind acc of sports car at t = 30 s.

30 m/s 450 m -0.33 m/s2

What was happening from t = 300 to t = 400 s?What was vterminal of capsule just before “splashdown”?What was acc of rocket during 1st two stages?What was aavg from t = 100 s to t = 300 s? 88000 m5.0 m/s2-10 m/s2

Page 85 ecp #27

At what time did rocket reach dmax?What was the maximum altitude?200 s 15 m/s2-70 m/s

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