Question

please solve this.....​

Answer 1

Answer:

Explanation:

→ At first find the height above the ground at which Stone is stopped.

H1 max = ut + 1/2gt²

H1 = 0 + 1/2×9.8× 5×5

H1= 122.5m

Now ,

It is given in question that srone stopped after 3sec

(Vertical direction travelled in 3sec)=

H2= 0+1/2×9.8×3×3

H2= 44.1m

Remaning distance= (122.5-44.1)=78.4m

Now,

78.4 = ut+1/2×9.8×t²

78.4=0+4.9t²

t= 4sec

Total time taken =[4+3]=7sec✓✓

Happy to help!

:)