A 1 000-Kg Experimental Rocket Sled on Level Frictionless Rails

question 50

Multiple Choice

A 1 000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of propellant.It exhausts the propellant in a 20-s "burn." If the rocket,initially at rest,moves at 150 m/s after the burn,what impulse is experienced by the rocket sled?

• A)1.1 x 10⁵ kg*m/s
• B)1.6 x 10⁵ kg*m/s
• C)1.5 x 10⁵ kg*m/s
• D)1.9 x 10⁵ kg*m/s

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Definitions:

Substitutes Goods

Products or services that can replace or be used in place of another to fulfill the same need or desire.

Complementary Goods

Products or services that are consumed together because the use of one enhances the use or value of the other.

Income Elasticity

A measure of how much the demand for a good or service changes in response to a change in consumers' income.

Cross Elasticity of Demand

A measure of how the quantity demanded of one good responds to a change in price of another good, indicating substitutes or complements.