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Damm [24]
3 years ago
14

5. A car has a kinetic energy of 4.32x105 J when traveling at a speed of 23 m/s. What is

Physics
1 answer:
DIA [1.3K]3 years ago
7 0

Answer:

m = 163.33 kg

Explanation:

KE = 4.32x10^5

V = 23

KE = 1/2 mv^2

4.32x10^5 = 1/2 * m * 23^2

8.64x10^5 = 529m

m = 163.33 kg

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1 year ago
A hockey player skates with an average speed of 8.25 m/s. The distance the player will travel in 5.60 s is __________ .
OverLord2011 [107]
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7 0
3 years ago
Force → F = ( − 8.0 N ) ˆ i + ( 6.0 N ) ˆ j acts on a particle with position vector → r = ( 3.0 m ) ˆ i + ( 4.0 m ) ˆ j . What a
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Explanation:

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F{\cdot} r=|F||r|\ \cos\theta\\\\\cos\theta=\dfrac{F{\cdot} r}{|F| |r|}\\\\\cos\theta=\dfrac{(-8i+6j){\cdot} (3i+4j)}{\sqrt{(-8)^2+6^2} \times \sqrt{3^2+4^2} }\\\\\cos\theta=\dfrac{-24+24}{\sqrt{(-8)^2+6^2} \times \sqrt{3^2+4^2} }\\\\\cos\theta=0\\\\\theta=90^{\circ}

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8 0
3 years ago
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Answer:

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Explanation:

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4 years ago
Hey guys i need help (potential energy)
Vlad1618 [11]

Explanation:

Michael should put the vase at the bottom of the shelf to reduce the potential energy because the height of the vase to the floor is nearly zero.

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