Aparticle is moving along the x-axis so that its position at any time t is greater than and equal to 0 is given by x(t)=2te^-t?
a) find v(t).
b) find a(t).
c) at t=0, is the particle slowing down or speeding up? explain.
d) at what time(s), if any, does the particle change directions? justify your answer.
any would be greatly appreciated! !

see earlier answer

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card