Math 1.0 September 11 2016

Using plots to understand Velocity = distance / time

We are going to watch "How a top dragster works" by Car and Driver Magazine on YouTube:

It shows the distance at 0.5s intervals (also shows speed but we will focus on distance)

• watch video and record time and distance
• create a table with columns name time and distance

time (s)	distance (ft)
0.0	0
0.5	21
1.5	75
2.0	125
2.5	231
3.0	420
3.5	783
4.0	1000

• create a plot
• x axis = time in seconds from 0 to 4
• y axis = distance in feet from 0 to 1000
• ask: when was car going fastest? when was it going slower

Which way to the city of Lies?

Citizens of the City of Lies always lie. 
Citizens of the City of Truth always tell the truth. 
A citizen of one of those cities (you don't know which) is at the intersection. What question could you ask to them to find the way to the City of Truth?

You are at an unmarked intersection ... one way is the City of Lies and another way is the City of Truth. 

City of Lies or Truth Puzzle - Solution from mathisfun.com