pag3 trolley on a ramp

Question 1

in toar pag3 what is the independent variable

Answer 1

the height of the ramp (cm)

Question 2

in toar pag3 what is the dependent variable

Answer 2

the time to descend (s)

Question 3

in toar pag3 what are three control variables

Answer 3

length of ramp
weight of car/ trolley
surface of ramp (friction)

Question 4

what is the equipment list for toar pag3

Answer 4

trolley
ramp
timer
books
ruler

Question 5

what is the method for toar pag3

Answer 5

1) set the ramp height to 10cm
2) place the trolley at the top of the ramp
3) release the trolley and start the timer
4) stop the timer when the trolley reaches the bottom
5) record the time
6) increase ramp height by 10cm and repeat experiment

Question 6

what is the conclusion for toar pag3

Answer 6

as the ramp height increased the speed increases, and the acceleration increases. the relationship between height and acceleration is positive.

Question 7

what are two possible errors of toar pag3

Answer 7

measure of time - human error
height of ramp - zero error on ruler

Question 8

what are two possible improvements of toar pag3

Answer 8

light gates
add the zero error to height