Question

a ball falls freely from top of a building of 25 floors. it cross how many floors in the last second of it's motion​

Answer 1

Answer:

Let the height of each storey =h

2

nd

equation of motion from starting point to A-

h

1

=0+

2

1

g(1)

2

⇒h

1

=

2

g

2

nd

equation of motion from starting point to B-

25h=0+

2

1

×g×(25)

25h=

2

25g

⇒h=

2

g

h=h

1