A train travelling along a straight track starts from rest at point A & accelerates uniformly to 20m/s in 20s. it travels at this speed for 60s, then slows down uniformly to rest in 40s at point C. it starts at rest at C for 30s, then reverses direction, accrlerating uniformly to 10m/s in 10s. it travels at this speed for 30s, then shows down uniformly to rest in 10s when it reaches point B A, plot a graph of the motion of the train
B, use your graph to calculate:
1.the train's displacement from point A when it
reaches point C
2.the train's displacement from point A when
it reaches point B
3,the train's acceleration each time its speed
changes

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray