Self Exercise 8.6 Question 3
Stitching patterns on the straight edge of a head gear is done by a sewing machine. The initial velocity of the sewing machine is . Its acceleration, in , is given by , where t is the time, in seconds, after passing through a fold.
Calculate
(a) the instantaneous velocity of the sewing, in , at the 2nd second.
(b) the instantaneous velocity of the sewing in , when the acceleration is 0.
(c) the time, in seconds, of the sewing when the acceleration is ,
(d) the value of t, in seconds, when the velocity of the sewing is