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Maksim231197 [3]

3 years ago

8

Which of the following best illustrates chemical potential energy a dog Plane, gasoline gasoline, water moving down hill, a skyd

iver about to jump out of a plane

1 answer:

ladessa [460]3 years ago

3 0

The skydiver has a bunch of gravitational potential energy. The best example of chemical potential energy is gasoline.

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What is the answer for number 10

Finger [1]

The vertical component is = vsinx m/s

If you know the angle, substitute the value of x.

If you know the velocity at which it is moving, substitute it for v

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7nadin3 [17]

Answer:

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Explanation:

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Fiesta28 [93]

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3 years ago

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Olympic skier Tina Maze skis down a steep slope that descends at an angle of 30∘ below the horizontal. The coefficient of slidin

LekaFEV [45]

net force on Maze during his sliding downwards motion

$F = mgsin30 - \mu mg cos30$

now we will have

$F = mg(sin30 - 0.10cos30)$

now to find the acceleration we will have

$a = \frac{F}{m}$

$a = g(sin30 - 0.10cos30)$

$a = 9.81(0.5 - 0.10(0.866))$

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now to find the speed after 4 s is given by kinematics

$v_f - v_i = at$

here we know that

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$v_f = 16.22 m/s$

so Maze speed after 4 s will be 16.22 m/s

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3 years ago