Question

Displacement of an object is related with time as t = √x+3. Calculate the time when velocity is zero.​

Answer 1

Explanation:

t=√x +3

√x= t-3

x= (t-3)²

x= t²-6t +9

we know velocity =dx/dt

so v= d(t²-6t+9)/ dt

v= 2t-6 (differentiation of t² is 2t and 6t is 6 and of 9 is 0)

we have to find when v is 0

so, 2t-6=0

2t=6

which means t=3 second