Question

The displacement of a particle starting from
rest (at t = 0) is given by s = 66 - ". The time
in second at which the particle will attain zero
velocity again, is
b) 4
c) 6
d) 8
a) 2
"Please give detailed explanation of it"​

Answer 1

Answer:

Explanation:

s=6t  

2

−t  

3

 

v=  

dt

ds

​  

=12t−3t  

2

 

If.  v=0, then 12t−3t  

2

=0 .... (A)

Solving, we get t=0 sec or t=4 sec

Thus, the particle will attain zero velocity at the time of 4 seconds.