The energy expenditure value of traveling by car is 3.6 MJ/passenger-kilometer. For one person making a trip of 1000 km, if a ga
1 answer:
Answer:
30[gal] would be requiered.
Explanation:
The consumption ratio is given by the following expression:
To find the amount of energy needed we must multiply the ratio by the number of passengers, in this way the unit passenger-kilometer is removed from the denominator.
1 gal = 120 [MJ]
x = 3600[MJ]
x = 30 [gal]
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Answer:
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Explanation:
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In fact, after the astronaut throws the object, no additional forces will act on it (since the object is in free space). According to Newton's second law:
where the first term is the resultant of the forces acting on the body, m is the mass of the object and a its acceleration, we see that if no forces act on the object, then the acceleration is zero. Therefore, the acceleration of the object is zero, and its velocity remains constant.