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Hello...... A body is thrown horizontally from the top of a tower and strikes the ground after three seconds at an angle of 45 degree with the horizontal. Find the height of the tower and the speed with whoch the body was projected .

Hello......
     A body is thrown horizontally from the top of a tower and strikes the ground after three seconds at an angle of 45 degree with the horizontal. Find the height of the tower and the speed with whoch the body was projected .

Grade:9

2 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
7 years ago
Hii
Use projectile motion equation by diving them along the x and y axis . You will get the answer
PASUPULETI GURU MAHESH
126 Points
7 years ago
By the projectail motion concept time of flight  t=2usin teeta / g
                                                                            3=2usin teeta / g
     then finally you get u=15 root3
 
 thank you

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