Question
Question: A body is projected horizontally from the top of a tower with initial velocity 18 ms<sup>–1</sup>. I...
A body is projected horizontally from the top of a tower with initial velocity 18 ms–1. It hits the ground at angle 45o. What is the vertical component of velocity when it strikes the ground
A
9 ms–1
B
92ms–1
C
18 ms–1
D
18 2ms–1
Answer
18 ms–1
Explanation
Solution

When the body strikes the ground
tan45o=vxvy=18vy= 1
vy=18m/s.