hmmmmm..

3 mistakes - leap year.. oh my gosh, my eng is so bad.. then quest 2 d sign prob... aishhh.. and then d last one quite pekcek...i din minus d friction force bet d 6kg mass and 2kg mass... at first.. i was doing the right way.. i wana minus that upper part frictional force but then looked at d quest again... the quest did not provide any miu k for f between 6kg mass and 2kg mass... so i should ignore tat friction right... then then then.. d ans became wrong lo... d quest should be stated more clearly what ...