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:

Probability

Probability is the branch of mathematics that deals with the likelihood of a given event's occurrence, ranging between 0 (impossible event) and 1 (certain event).

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating the spread of data points.

Sampling Distribution

The distribution of probabilities for a certain statistic, originating from a random sample.

Normal Distribution

In this type of distribution, occurrences of data are more frequent near the mean and decrease in frequency as they move away from the mean, with the distribution being symmetric.