You are not logged in.
The speed of a 4kg object is given by v=(2t) m/s, where t is in seconds. At what rate is the resultant force on this object during work at t=1 second?
Offline
Okay ,
a is the acceleration , then apply the Newton's law , Thus you get your answerLast edited by Stanley_Marsh (2007-03-09 06:51:46)
Numbers are the essence of the Universe
Offline
how do i get v???
Offline
you don't need to get v , you know that v/t=a , from the v=2t , divide both sides by t, you get v/t=2 , thus a=2 , that's it
Numbers are the essence of the Universe
Offline