Sec. 5-5 Time-dependent force If the forces are dependent on time we can still use Newtons laws to analyze the motion For simplicity, we assume here that the forces and the motion are in one dimension Which we take to be the x direction Then F()=ma(t)=m dt (5-18) F( dtSec. 5-5 Time-dependent force For simplicity, we assume here that the forces and the motion are in one dimension, which we take to be the x direction. Then (5-18) dt dv Fx (t) = ma(t) = m dt m F t dv x x ( ) = If the forces are dependent on time, we can still use Newton’s laws to analyze the motion