page 1

Problem Set - Distance-Time Graphs

Examine this graph carefully to answer questions 1 and 2.

10

800

0 20 30 40

200

50

400

600

t (s)

d(m)B

A

E

D

C

1. What is the truck’s displacement from its starting point after: (a) 10 s (b) 15 s (c) 30 s (d) 43 s (e) 50 s 2. What is the truck’s velocity in each of the intervals A through E? A B C D E 3. Describe briefly the kind of motion that is taking place in each of the situations represented by the

following displacement vs. time graphs.

0 t (s)

d(m)

0 t (s)

d(m)

0 t (s)

d(m)

4. Describe briefly the motions represented by each of these graphs. If the speed is changing, state whether

it is increasing or decreasing.

0 t (s)

d(m)

0 t (s)

d(m)

0 t (s)

d(m)

300 m300 m

2 oom 66 On

Soon

30 mls 0m/s- 10ms 40mA20Mt

a person was running ,then a car moving at a constant a cyclist pedals @ constant

Speed then suddenly stopping speed then adds foster at constantStarts walking speed , stops ,

then continues @ constantspeed .

an object Y increasing an object moving forward object Speeding up in the

Speed but slowing down. beginning then swing down ,

them finally stopping

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5. Describe the motion represented by each of the following displacement vs. time graphs.

0 t (s)

d(m)

0 t (s)

d(m)

0 t (s)

d(m)

Use the following graph for question 6.

10

35

0 2 124 20

t (s)

d(m)

5

15

25

10

20

30

6 8 14 16 18 22

6. a) From the graph above, calculate the average speed for the entire 22 s.

b) Find the average speed for each of the following time intervals:

(i) 0 s to 2 s

(ii) 4 s to 8 s

(iii) 14 s to 18 s

(iv) 6 s to 17 s

Your dais mate starts @ rest

at one end of the football field ,

Speeds up ,slows

.

down at the end

of the field , and speeds up in the

opposite direction after touchingthe end line .

Your classmate

slows down before finishingback @ where he started .

you walk to school @ Constant speed, stop @ You run from CG 's A wing to the end ( E wind,

school then walk back home @ run back to C wing ,to the end

,( wing ,

constant speed .

to the end, and back to C wing .

All the runningdone was @

Constant speed .

o=tIed¥Ie . Tessking= de .

. 512 : 2.sn/s 134J

s=q÷ .to#

w=%=20mft - 1.754 > HmD

on % .-155¥ , 0.91 m/s |o.9m/J