Since they want the effect of the angle of the ramp, that is what should be changed. Keep the same block so that friction coefficients do not change. That will automatically also keep the mass the same. (Mass would not matter, however, in a frictionless situation)
The dependent variable would be either the speed at the end of the ramp or how long it takes to go down (from which an average speed can be derived).
As you change the angle of the ramp, you should also keep the distance that it slides the same. Tilting a plank of constant length, and starting the slide from near the top, will accomplish that.
i have to do an experiment to "determine the relationship between the angle of the rampand speed of an object sliding down it"
i was told i had to have a few variables.
-controlled(keep the same)
-independent(change 1 thing)
-dependent(measure 1 thing)
so if the angle of my ramp was 45degrees and i had a cube sliding down it.
what do i change?
do i change the object or the angle?
what do i measure?
the angle of the ramp or the speed of the object? but wouldn't i have to do that for all variables anyway?
what do i keep the same?
do i leave the 45degrees and the cube?
1 answer