This is a virtual experiment form Virtual Science's Virtual Physics Laboratory. The aim is to verify Newton's second law using an Airtrack. The airtrack provides a close-to friction free track for a glider to move along. The formula: Force = Mass X Acceleration can be verified by pulling the glider by weights and measuring the time the glider takes to pass through timing gates placed on the track. More information can be found at: https://www.virtual-science.co.uk/. Instructions on how to perform the experiment are found within the simulation. This is a free Physics resource which you are free to use in the classroom. If you need more comprehensive instructions then email me for them at rob@virtual-science.co.uk.