Class was started with a classwork review sheet based on classwork from yesterday and last Thursday. Using dynamics cart, spring balances and masses, the acceleration of the cart (with a 1kg mass on it) was shown to increase by measuring the time required to move the cart a given distance with pulley forces consisting of 20g,40g,50g,100g, and 200 g. The relationship between the the force applied and the acceleration was shown by the decrease in time required to move the cart the given distance. The same demo was performed with a mass of 0.5kg in the cart and the time recorded. The acceleration was shown to increase with the decreased mass. The inverse relationship between mass and acceleration was written in formula form. The direct relationship between acceleration and force was written, and the two combined to show Newtons second law.