1. The problem statement, all variables and given/known data Investigate the effect of the pulling force on average velocity. You will be given a trolley and a ramp and slotted masses to create pulling force. 2. Relevant equations F=ma Average velocity = d/t 3. The attempt at a solution My hypothesis is that as we increase the pulling force by using slotted masses, the average velocity of the trolley will be increased. I think that for this experiment we can use the formula F=ma. Where we can use a as average velocity although it acceleration. Since there is no other formula we can use apart from this. I think the question is referring to acceleration by mentioning average velocity. I am going to add weights to make a pulling force and as i push the trolley down the ramp with different force, this will cause the average velocity to increase. Only thing i want to clarify about my above answer is. Am i right about we can say that average velocity is same as acceleration for this experiment?