A boy kicks a football horizontally from the roof of a building of height 10m, . If the line joining the initial position of the football and the point where it hits the ground make anangle of 45^(@) with the ground, then find the displacement of the football

A boy kicks a football horizontally from the roof of a building of hei

1.	A boy kicks a football horizontally from the roof of a building of height 10m, . If the line joining the initial position of the football and the point where it hits the ground make anangle of 45^(@) with the ground, then find the displacement of the football
Answer» SOLUTION :The SITUATION is as show in the following diagram. The height of the building is respresented by AO.The football is HIT from point A and it hits thr ground at B. Triangle OABj is an isoseceles rigth-angled triangle. Therefore, , AO=OB=10m `AB=sqrt(OA^(2)+OB^(2))=sqrt(10^(2)+10^(2))=sqrt(200)` `AB=10sqrt(2)m` Displacement `=10sqrt(2)m`