A Man Standing on Frictionless Ice Throws a 1 $\degree$ What Was the Magnitude of the Man's Momentum Immediately After

question 20

Multiple Choice

A man standing on frictionless ice throws a 1.00-kg mass at 20.0 m/s at an angle of elevation of 40.0 $\degree$ .What was the magnitude of the man's momentum immediately after throwing the mass?

• A)16.8 kg·m/s
• B)15.3 kg·m/s
• C)12.9 kg·m/s
• D)This cannot be answered because the mass of the man needs to be known.

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Definitions:

(R)-glyceraldehyde

A carbohydrate that is the R-enantiomer of glyceraldehyde, serving as a simple monosaccharide and a basic building block for more complex sugars.

(-)-glyceraldehyde

A specific stereoisomer of glyceraldehyde, a simple sugar molecule that serves as an intermediate in several metabolic pathways.

(+)-glyceraldehyde

An enantiomer of glyceraldehyde, denoted as having a positive optical rotation; it is a simple sugar and plays a role in several metabolic pathways.

E.e.

Enantiomeric excess, a measure of the purity of an enantiomer in a mixture, indicating the percentage difference between two enantiomers' concentrations.