A 50-N Force Is Applied to a Crate on a Horizontal

question 55

Multiple Choice

A 50-N force is applied to a crate on a horizontal rough floor, causing it to move horizontally.If the coefficient of kinetic friction is 0.50, in what direction should the force be applied to obtain the greatest acceleration?

• A)Horizontal
• B)60°above the horizontal
• C)30° above the horizontal
• D)27° above the horizontal
• E)30° below the horizontal

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Definitions:

Proactive Interference

A phenomenon where older memories interfere with the recall of newer memories.

Retroactive Interference

A phenomenon where newly acquired information interferes with the recall of information learned previously.

Memory Problems

Difficulties in remembering information, which can range from minor forgetfulness to more serious conditions affecting daily life.

State-dependent Memory

The phenomenon in which information learned in a particular state of mind (e.g., emotional, pharmacological) is more easily recalled when in the same state.