1. The problem statements, all variables and given/known data 1. a 100m long train accelerates uniformly from rest. If the front of the train passes a railway worker 150m down the track at a speed of 25m/s, what will be the speed of the last car as it passes the worker? 2. a hot air baloon is rising up with a constant velocity of 4m/s. As the balloon reaches a height of 4m above the ground the balloonist accidentally drops a can of pop over the edge of the basket. How long does it take the pop can to reach the ground? 3.a stone is dropped from the roof of a high building. a second stone is droped 1s later. How far apart are the stones when the second one reached the speed of 23m/s? 3. a rock is dropped from a seacliff and the sound of it stirking the ocean is heard 3s later. If the speed of sound is 330m/s, how high is the cliff? 2. Relevant equations These are the equations we were given to solve the questions: (it might look messy, f is final and t is time) Vf^2=V1+2ad Vf=V1+at d=V1+1/2at^2 d=Vft-1/2at^2 d=(V1+Vf/2)t honestly i tried doing these, but i just dont get it!