A train traveling along a straight line starts from rest at point A and acceleratesee uniformly to 30ms-1 in 20 sec. It travels at the speed for 60 sec, then slows down uniformly to rest on 40s at point C. It stays at rest at C for 30 sec, then reverses direction, accelerating uniformly to 10ms-1 in 10sec. It travels at this speed for 30 sec, then slows down uniformly to rest in 10sec when it reaches point B 1. Plot a graph

2. Use the graph to calculate a. The trains displacement from point A while it reaches point c

B. The trains displacement from point a when it reaches point B

C. The trains acceleration each time it's speed changes

Please hurry up and get it right it's an emergency