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liubo4ka [24]
2 years ago
5

Assume that you can drive at a constant speed of 100 kilometers per hour. suppose you started driving from the sun. how long wou

ld it take, in years, to reach earth?
Physics
1 answer:
belka [17]2 years ago
4 0
The Sun is 149.6 million kilometers from the earth.
There are 8760 hours in a year. 
876000 km are traveled in a year
It would take 170.776 years to reach the sun, or 171 years rather
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We can use the law of conservation of energy to solve the problem.

The total mechanical energy of the system at any moment of the motion is:
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At the beginning of the motion, the ball starts from the ground so its altitude is h=0 and therefore its potential energy U is zero. So, the mechanical energy is just kinetic energy:
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When the ball reaches the maximum altitude of its flight, it starts to go down again, so its speed at that moment is zero: v=0. So, its kinetic energy at the top is zero. So the total mechanical energy is just potential energy:
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3 years ago
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so work done is same as the heat supplied to the system

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123 J transfer into the gas

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