A Ball of Relatively Low Density Is Thrown Upwards

question 49

Multiple Choice

A ball of relatively low density is thrown upwards.Because of air resistance the acceleration while traveling upwards is −10.8 m/s².On its trip downward the resistance is in the opposite direction,and the resulting acceleration is −8.8 m/s².When the ball reaches the level from which it was thrown,how does its speed compare to that with which it was thrown?

• A)It is greater than the original speed upward.
• B)It is the same as the original speed upward.
• C)It is less than the original speed upward.
• D)Without knowing the original speed,this problem cannot be solved.

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Definitions:

EDD

Earliest Due Date, a rule in scheduling that prioritizes tasks to be completed or orders to be delivered by the closest due date.

SPT

Shortest Processing Time, a scheduling rule that prioritizes tasks based on their processing times, aiming to minimize completion time or lateness.

LPT

Least Processing Time, a scheduling rule prioritizing jobs with the shortest processing time.

Due Date

The specified date by which a task, project, or payment should be completed or submitted.