Question

A stone after projection at an angle 'e' with respect to ground
from roof of a tower, was again at the level of projection two
seconds after the projection and it falls on ground 3 seconds
after the projection. Then height of the tower is (g = 10 m s-2)

Answer 1

Answer:Let the Time taken for projectile motion be 'T' and time taken for descend be 't'.

T=  

g

2usinθ

​  

=2

usinθ=10

wkt,

s=ut+  

2

1

​  

at  

2

 

H=−usinθ×3+  

2

1

​  

×10×1  

2

 

H=15m

​  

 

Explanation:

Answer 2

Answer:

15m

Explanation:

hope it helps you..........