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jarptica [38.1K]
2 years ago
10

Why is the answer D?

Physics
1 answer:
IgorC [24]2 years ago
8 0

because that is  the right equation

Calculate them and you will know why the correct answer is D

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List the forms of renewable energy that are curently in use
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Here are the ones that I know about
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3 years ago
a sydiver jumps out of a plane. She fall dowward at a very fast speed. Which force is acting upon it?
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The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 miles per hou
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Answer:

a) 4.40 s

b) 2.20 s

Explanation:

Given parameters are:

At constant power  ,

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At full power,

initial speed of the car, v_0=0

final speed of the car, v=64 mph

a)

At constant power, KE = \frac{1}{2} mv^2

At full power, KE = \frac{1}{2} m(2v)^2

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So, time to reach 64 mph speed is 4 times more than the initial time

t = 4*1.10 =4.40 s

b)

v=v_0+at\\a=\frac{v-v_0}{t}=\frac{32-0}{1.1/3600}=104727.27 miles/hours^2

For final 64 mph speed,

v=v_0+at\\t=\frac{v-v_0}{a}=\frac{64-0}{104727.27} = 6.111*10^{-4} hours = 6.111*10^{-4}*3600=2.20 s

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2 years ago
Read 2 more answers
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