Asked by Kristen

A ball is shot from the ground into the air. At a height of 0.1m, the velocity is observed to be v=7.7i + 6.4j in meters per second (i horizontal, j upward). What is the direction of the ball's velociry just before it hits the ground?
Answered by bobpursley
It has the same i component, but j reverses sign.
Answered by Kristen
We need to be able to find an angle that it is at when it hits the ground
Answered by bobpursley
theta = aretan(jomponent/icomponent)
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