Answers

2015-08-18T18:42:25+05:30
An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).

0
2015-08-18T19:54:06+05:30
When final velocity is more compared to intial velocity negative acceleration comes into play
negative acceleration is also called retadation

0
negative acceleration is also called Retadation