A 004-Kg Ball Is Thrown from the Top of a 30-M

question 48

Multiple Choice

A 0.04-kg ball is thrown from the top of a 30-m tall building (point A) at an unknown angle above the horizontal.As shown in the figure,the ball attains a maximum height of 10 m above the top of the building before striking the ground at point B.If air resistance is negligible,what is the value of the kinetic energy of the ball at B minus the kinetic energy of the ball at A (K_B - K_A) ?

• A)12 J
• B)-12 J
• C)20 J
• D)-20 J
• E)32 J

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Definitions:

Liability

An obligation that an individual or entity has to another individual or entity, often involving the payment of money.

Interest

The cost that creditors charge for use of their capital.

Moral Hazard

The risk that one party to an agreement can change their behavior to the detriment of another after the transaction has taken place, often due to asymmetrical information.

Bonded

indicates a state of being secured by a bond, involving a financial guarantee or protection against losses.