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lisabon 2012 [21]

4 years ago

8

A race car accelerates on a straight road from rest to speed of 180 km/hr in 25s . Assuming uniform acceleration of the car thro

ugh out find the find the distance covered in this time .

1 answer:

adelina 88 [10]4 years ago

3 0

X-x0=0.5(v0+v)t ergo x=0.5(50)25=625m

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First, we need the distance of Europe and Wolf-359 from Earth.
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- The distance of Wolf-359 from Earth is instead 7.795 light years. However, we need to convert this number into km. 1 light year is the distance covered by the light in 1 year. Keeping in mind that the speed of light is $c=3 \cdot 10^8 m/s$ , and that in 1 year there are
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Now we can calculate the time the spaceship needs to go to Wolf-359, by writing a simple proportion. In fact, we know that the spaceship takes 2 years to cover $d_E$ , so
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3 years ago