Question

A stone, dropped from the top of a
tower, travels 35 m in the last second
of its journey. The height of the tower
is: (g = 10 m/s)​

Answer 1

Answer: 45m

Explanation: See the picture

Answer 2

Answer:

Height of the  tower is 80 m

Explanation:

let the time taken by the stone to reach the ground be n sec

so dist travelled in last sec is given by

s=u+a/2(2n-1)

so 35=0+10/2(2n-1)

7=2n-1

n=4sec , so

height of the tower=0+10/2*4x^{2}

height of the tower =16*5=80m