Q11 of 89 Page 51

Figure (3-E6) shows x-t graph of a particle. Find the time t such that the average velocity of the particle during the period O to t is zero.




Let B be a point at t=12 s


At t=0 s, distance, S=20 m


At t=12 s, distance, S=20 m


I.e.


∴ t= 12 s is the time where average velocity =0 m/s


More from this chapter

All 89 →
9

Figure (3-E4) shows the graph of the
x-coordinate of a particle going along the X-axis as a function of time. Find (a) the average velocity during O to 10 s,
(b) instantaneous velocity at 2, 5, 8 and 12s.


 10

From the velocity—time plot shown in figure (3-E5), find the distance travelled by the particle during the first 40 seconds. Also find the average velocity during this period.


 12

A particle starts from a point A and travels along the solid curve shown in figure
(3-E7). Find approximately the position B of the particle such that the average velocity between the positions A and B has the same direction as the instantaneous velocity at B.


 13

An object having a velocity 4.0 m/s is accelerated at the rate of 1.2 m/s2 for 5.0 s. Find the distance travelled during the period of acceleration.