An object dropped from the top of the tower and covered 25m at the last second , then find the height of the tower ?

The stone covers 25 m in the last second of its fall from top of a tower.

Distance covered in any one given second = Average speed of the body during that second × 1 second = ½ × (speed at the beginning of the second + speed at the end of the second) × 1 second=1/2 ( speed at the beginning of the last second is say u + speed at end of the last second is u + a ) × 1 second = ½ ( u + u+a )× 1 second= ( u + ½ a) × 1 second = ( u +5m/s²×1s) × 1 second (a = 10 m/s²=( u m/s + 5 m/s)× 1s.

The objects do not reach terminal velocity         there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling