1. The problem statement, all variables and given/known data Block 1 and Block 2 have the same mass 'm', and are released from the top of two inclined planes of the same height making 30 degree and 60 degree angles with the horizontal direction, respectively. If the coefficient of friction is the same in both cases, which of the blocks is going faster when it reaches the bottom of its respective incline? 2. Relevant equations mgh = 1/2mv^2 3. The attempt at a solution Using the above equation, I found that both blocks would have the same speed once they reached the bottom of the incline. However, block 2 would reach the bottom first due to it's PE being converted into KE faster than block 1. However, my instructor informed me that my answer "Both blocks have the same speed at the bottom" is incorrect and in fact Block 2 is faster at the bottom. Can anyone explain why this is the case? Thanks.