Please explain all steps . A player passes a basketball to another player who ca
ID: 2283891 • Letter: P
Question
Please explain all steps .
A player passes a basketball to another player who catches it at the same level from which it was thrown. The initial speed of the ball is 7.5m/s , and it travels a distance of 4.8m .
What was the initial direction of the ball? Express your answer using two significant figures. If there is more than one answer, separate them by a comma.
What was its time of flight? Express your answer using two significant figures. If there is more than one answer, separate them by a comma.
Explanation / Answer
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If the ball was thrown horizontally, the player #2 could not have caught the ball at the same level that it was thrown. So, player #1 must have thrown the ball at angle of ? above horizontal.
As the ball moved from player #1 to player #2, the weight of the ball caused its initial vertical velocity to decrease at the rate of 9.8 m/s each second.
The horizontal velocity remains constant.
The ball moves a horizontal distance of 4.8 m in the same time as the ball
The initial vertical velocity of the ball = V * sin ? = 7.5 * sin ?
The initial horizontal velocity of the ball = V * cos ? = 7.5 * cos ?
Vertically, the ball moved from its initial height to the top of path and back to its initial height in the same time as it moved 4.8 m horizontally!!!
The time for the ball to move up and down = 2 times the time to move up to the top of the path. At the top of the path, the ball