Two Identical Balls Are Thrown Directly Upward,ball a at Speed

question 32

Multiple Choice

Two identical balls are thrown directly upward,ball A at speed v and ball B at speed 2v,and they feel no air resistance.Which statement about these balls is correct?

• A) Ball B will go twice as high as ball A because it had twice the initial speed.
• B) Ball B will go four times as high as ball A because it had four times the initial kinetic energy.
• C) The balls will reach the same height because they have the same mass and the same acceleration.
• D) At its highest point, ball B will have twice as much gravitational potential energy as ball A because it started out moving twice as fast.
• E) At their highest point, the acceleration of each ball is instantaneously equal to zero because they stop for an instant.

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Definitions:

Human Relations

The study and management of how people interact within groups, often in a professional setting.

Proactive Measures

Actions taken in advance to prevent potential problems or to seize opportunities before they become obvious.

Reactive Measures

Actions or policies implemented in response to events or situations, rather than to prevent them.

Negotiations

The process of discussing something with someone and aiming for a mutual agreement or compromise.