A ball is shot horizontally from the top of a building with an initial speed of...
A ball is shot horizontally from the top of a building with an initial speed of 45 m/s. The ball lands 180 m horizontally from the release point. a) Explain how you can find the time the ball is in the air and find the time. b) Explain how you can find the height of the building and find the height.
Homework Answers
Concept - take the launch point of the ball as origin and a point as positive Y axis and to the right as positive X axis. The horizontal velocity of the ball will remain constant throughout the motion. We use equation of kinematics in horizontal and vertical directions separately to find the time and height of the building as shown below
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