A Constant Horizontal Pull Acts on a Sled on a Horizontal

question 7

Multiple Choice

A constant horizontal pull acts on a sled on a horizontal frictionless ice pond.The sled starts from rest.When the pull acts over a distance x,the sled acquires a speed v and a kinetic energy K.If the same pull instead acts over twice this distance:

• A)The sled's speed will be 2v and its kinetic energy will be 2K.
• B)The sled's speed will be 2v and its kinetic energy will be K .
• C)The sled's speed will be v and its kinetic energy will be 2K.
• D)The sled's speed will be v and its kinetic energy will be K .
• E)The sled's speed will be 4v and its kinetic energy will be 2K.

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Definitions:

Concurrent Use

The simultaneous use of multiple medications or treatments by a patient, often assessed for potential drug interactions.

Medications

Substances used in the diagnosis, treatment, or prevention of disease and for relieving pain or suffering.

Developmental Tasks

Certain psychological and emotional accomplishments that are expected to be achieved by individuals as they grow and develop.

Middle-aged

A life stage typically ranging from about 45 to 65 years of age, often marked by both physical and psychological changes.