Find a ball of any kind (soccer ball, tennis ball, toy ball, marble, etc.)
Make a ramp: get a flat surface such as a cutting board and prop it up against a stack of books, a box, or other object that will hold up one end. The ramp shouldn’t be too steep, somewhere between 6 and 12 inches in height.
Set the ramp up on one of your surfaces (e.g. carpet) so that if you let the ball go at the top of the ramp, the ball has about 10 feet to travel before it hits anything. Note: if you don’t have 10 feet of clear space, you can do a shorter distance, just make sure it is always the same distance.
Mark a line 10 feet from the bottom of the ramp. You could use a tape measure, but if you don’t have one just count out ten foot-lengths using your feet to measure (touching heel to toe, count out ten steps). Mark that line with a pencil, or whatever you have.
Get your timer ready (use your chromebook or a phone if you don’t have a stopwatch).
For your first trial on this surface type, let the ball go at the top of the ramp then start the timer as soon as it hits the flat floor. Stop the timer when the ball reaches your ten foot marker.
Record the time in the below data table.
Repeat steps 7 and 8 three more times on that same surface type
Move your setup (ramp and 10 foot marker) to a second surface type (e.g. wood floor) and repeat the data collection process for a total of three trials.
Move your setup to a third surface type (e.g. a different carpet or outside on a flat cement sidewalk) and repeat the data collection process.
