A Super Dart of Mass 20 G,traveling at 350 M/s,strikes

question 89

Multiple Choice

A super dart of mass 20 g,traveling at 350 m/s,strikes a steel plate at an angle of 30° with the plane of the plate,as shown in the figure.It bounces off the plate at the same angle but at a speed of 320 m/s.What is the magnitude of the impulse that the plate gives to the bullet?

• A)0.52 N ∙ s
• B)4.3 N ∙ s
• C)300 N ∙ s
• D)6.7 N ∙ s
• E)0.30 N ∙ s

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Definitions:

Total Fertility Rate

The average number of children a woman would have over her lifetime, given current birth rates.

Population Constant

A hypothetical situation where the population size remains unchanged over a period of time.

Living Standard

The level of wealth, comfort, material goods, and necessities available to a person, community, or country.

Total Fertility Rate

The average number of children that would be born to a woman over her lifetime based on current age-specific fertility rates.