This is doing my head in. It should be really simple, but I just can't work out the reasons why. I have a particle of 50g that drops from rest. It drops 1m in 12s. I then have to find the final velocity of the particle after this 12s. Using v = u + at I get v=12g Using h = (u+v)t/2 I get v=1/6. This is clearly quite a large discrepancy, andI can't see why. Can anyone put me out of my misery with this please?