Wagon and String Obtain a child's wagon, some light cotton string or thread, and two or three small volunteers.
This ensures that the total mass experiencing acceleration remains constant throughout the experiment. Next, have one of your volunteers sit in the wagon and once again pull the string until you reach walking speed.
Now place a bowl filled with powdered sugar or flour underneath the rock, and drop it from a fixed height into the powder.
You will notice that the toy car rolls down the ramp and also moves some distance before it stops. When ready to record data, click the Start button.
A series of results is accumulated in a table. Observe the measurement for the acceleration of the trolley.
Enter from the keyboard '1' 1 newton in the force column of the table.