From an elevated point P, a stone is projected vertically upwards. When it reaches a distance d below P, its velocity is doubled. The greatest height reached by it above P is :
A
d/3
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
3d
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2d
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
d/2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is Bd/3 v−u=gt 2u−u=gt
⇒t=ug where, t is the time to go from u (downward) to 2u (downward).
ttotal=2ug+ug=3ug since ug is time to go up and same time to come down.