Question

if velocity varies with time as v=4t.find the distance travelled by the body in th time interval from 2 sec to 4sec i

Answer 1

simple integration of v with respect to time
v =4t x =dv .dt
with the limits given i. e ,2 to 4
so x will come 24 m

Answer 2

For this we utilize, incorporation. Substituting v as given being referred to and coordinating it as for t taken after by putting the estimation of time at which you require the dislodging will give you reply.

Recipe which will be helpful Integration of x^n regarding dx = {x^(n+1)}/n+1 ,

where n can't be equivalent to - 1.