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hoa [83]
3 years ago
7

0.75 km expressed in centimeters

Physics
2 answers:
Rufina [12.5K]3 years ago
6 0
0.75 kilometer= 75000 centimeters
AnnZ [28]3 years ago
5 0
There is 100,000 centimeters in one kilometer. Since .75 kilometers is 3/4 of one kilometer, you need to find 3/4 of 100,000. 100,000*3/4=75,000. The answer is that there is 75,000 centimeters in one kilometer. Hope this helps! ;)
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katovenus [111]

Answer:

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The expression left corresponds to an oscillatory movement (MAS), the speed is defined by

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let's perform the derivative

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          v = -2π sin (π 0.25) i^ + 3π cos (π 0.25) j^

           v = (-4.44 i^ + 6.66 j^ )  m/s

To calculate the mean acceleration we use the expression

           a = (v_{f} - v_{o}) / Δt

 

indicates that the time is the first 3 s

       

we look for the initial velocity t = 0 s

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          v_f = 0 i ^ - 3π j ^

we calculate the average acceleration

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           a_average = (0-0) / 3 i ^ + (-3π - 3π) / 3

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