Physics/Dr. Lankar                  Name: ________________ section: ______________: grade: _______
LAB graph 4-
To work your graphing skills
Find your walking speed.
HOME                  Try without hint !

INTRODUCTION (fill blanks)
In Class we saw that the relationship between distance and time is:
d = ______ t. Using this relationship, you are going to find you wlaking speed.

PROCEDURE

1 string 5 meters long ? .  Some students will have to form a line and to stand about 5 m ? apart.
Each student standing up in line has a stoptwatch in her/his hand ready to be stopped.
Each student has a his/her lab to record time (s) .
EAch of you will walk at his/her regular pace. EAch time you pass a standing a timer, the timer will stop his/her watch.
When you reach the end of the line, record in your lab the times recorded by each of the timer in the following TABLE:

x= position (m)y= time (s)
00
5__________
10___________
15____________
20___________
25___________
30_________


ANALYSIS

1) draw a graph time vs position  Do not connect the dots. (do not use the TI).
Trace the best fit line. (it goes through (0,0) ). don't forget the title, to label the axis and the units. time is the _________ variable and position the _________ variable.

 Find the slope = _________ s/m  .  y-intercept = ______. Use the slope of the line to find the speed of the walker. speed = _____ m/s

2) Who has the smallest speed ?____________
Who has the largest speed ? ______________










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