Exit Ramp Experiment – Part 1
We are roll cars down a ramp. Determine the condi:ons that cause the car to roll the furthest. 1. What two quan::es can we measure? (What two quan::es can change?) 2. What is your independent and dependent variable? 3. What units are we measuring for each variable? Ex: $ or minutes miles 4. What are the units of your rate of change? Ex: hour x y Conduct the experiment by crea:ng a simple table. Roll the car down the ramp and take a measurement when the car comes to rest. Do this four :mes. Then change the height of the ramp, repeat rolling the car down the ramp and taking measurements four :mes. Change the height a total of three :mes. 6. Does the data depict a func:onal rela:onship? In order to be a func:on each x value must have only one y value These are x y Not a x y func*ons x y func*on -‐1 5 because -‐1 5 -‐1 5 since each x -‐1 has a 3 3 y value 3 3 value has -‐1 5 only one y -‐1 0 of 5 and 4 -‐2 4 -‐2 value, 0 even if the points repeat. Posi:ve Correla:on: as x increases, y increases 7. What kind of correla:on does your data depict? Nega:ve Correla:on: as x increases, y decreases or as x decreases, y increases No Correla:on: neither above, no trend x y 8. What is the domain and range of your data? Domain: -‐3 12 [-‐3,-‐1,0,2,5] -‐1 10 Range: 9. Is four feet a reasonable domain value for your data? [12,10,9,7,3] 0 9 Jus:fy your answer. 2 7 10. Is four feet a reasonable range value for your data? 5 3 Jus:fy your answer.