A Block Is Projected with Speed V Across a Horizontal

question 55

Multiple Choice

A block is projected with speed v across a horizontal surface and slides to a stop due to friction.The same block is then projected with the same speed v up an incline where is slides to a stop due to friction.In which case did the total mechanical energy of the block decrease the least?

• A)This problem cannot be solved since it was not indicated whether the horizontal surface and the incline both had the same coefficient of kinetic friction.
• B)The case on the horizontal surface had the least decrease in total mechanical energy.
• C)The case on the inclined surface had the least decrease in total mechanical energy.
• D)In both cases the decrease in mechanical energy was the same.

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Definitions:

Asymmetric Carbon Atoms

Atoms of carbon in a molecule that are bonded to four different groups, leading to chirality or optical activity.

Meso Compound

A type of stereoisomer with multiple chiral centers that is superimposable on its mirror image, making it achiral.

Chi-Squared Test

A statistical test used to determine the significance of the observed differences between categorical datasets and expected outcomes.

Nominal Data

Data that is categorized without a natural order or ranking, used for labeling variables without a quantitative value.