A 12???? mass moves under the influence of a force ??? = (4??2 ??? - 4?????)??,where ?? is the time in seconds. It starts at rest from the origin at ?? = 0.Find:a) Its velocityb) Its positionc)...

A 12???? mass moves under the influence of a force ??? = (4??2 ??? - 4?????)??,where ?? is the time in seconds. It starts at rest from the origin at ?? = 0.Find:a) Its velocityb) Its positionc) Calculate ??? × ????? ??h?????? ?? is the mass what physical quantity isthat?