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Molodets [167]
3 years ago
14

Which of the following is the proper unit for measuring power? Newton Joules Watts Meters

Physics
1 answer:
fredd [130]3 years ago
3 0
The unit for power is Watts. the newton is a unit for force. joules for energy and meters for distance
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The sensor in the torso of a crash test dummy records the magnitude and direction of the net force acting on the dummy.If the du
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Here in crash test the two forces are acting on the dummy in two different directions

As we know that force is a vector quantity so we need to use vector addition laws in order to find the resultant force on it.

So here two forces are given in perpendicular direction with each other so as per vector addition law we need to use Pythagoras theorem to find the resultant of two vectors

so we can say

F_{net} = \sqrt{F_1^2 + F_2^2}

here given that

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now we will plug in all data in the above equation

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2 years ago
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Answer:

The minimum distance in which the car will stop is

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F=m*a\\a=\frac{F}{m}\\a=\frac{u*m*g}{m}\\a=u*g\\a=0.096*-9.8\frac{m}{s^{2} }

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v_{f}^{2}=v_{o}^{2}+2*a*(x_{f}-x_{o})\\v_{f}=0 \\x_{o}=0\\0=v_{o}^{2}+2*a*x_{f}\\x_{f}=\frac{v_{o}^{2}}{2*a} \\x_{f}=\frac{(-17.747\frac{m}{s})^{2}}{2*(-0.9408)} \\x_{f}=167.38m

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