proficiency 1 problem does the mass of a toy car affect the length it can push a domino? hypothesis if i test does the weight of a toy car affect how far it will push a domino then i think that the heavier the car the farther it will move. observations... experiment... conclusion...

proficiency 2 problem does the type of surface affect how far a marble will roll? ( carpet cement tile) hypothesis if i test which surface carpet cement or tile a marble will roll the farthes on i think cement because it doesnt have as much friction on it. observations... experiment... conclusion...