+91-87964 74404
FlagBACK
Question icon
Grade 11Mechanics

A ball projected from ground vertically upward is at same height at time t1 and t2 .the speed of projection of ball is.

Profile image of Soumyadeep
11 Years agoGrade 11
Answers icon

2 Answers

Profile image of Shobhit
9 Years ago
Since particle is atsame height at time t1&t2, therefore,t1 + t2 = total time of flightt1 + t2 =2TT=t1+t2/2AlsoT=u/g from (v=u+at and v being 0 at maximum height and g is negative)Therefore u/g=T1+t2/2Or U=1/2g(t1+t2)
Profile image of Soup tik Choudhury
8 Years ago
 
Since particle is at same height at time t1&t2,
Therefore,
(t1 + t2)= total time of flight
(t1 + t2) =2T
T=(t1+t2)/2
AlsoT=u/g from (v=u+at and v being 0 at maximum height and g is negative)
Therefore,
u/g=(t1+t2)/2
u=g(t1+t2)/2

Other Related Questions on