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Aleks [24]
3 years ago
11

After school, several students skateboard at the nearby park. Your best friend, Erwin, is a good skateboarder and happens to fal

l when attempting a fancy trick. After falling, Erwin gets back up and starts repeating the trick over and over again. How would a cognitive psychologist interpret Erwin getting back up and repeating the trick many times?
Physics
1 answer:
Alchen [17]3 years ago
3 0

Answer:

A person who never gives up.

Explanation:

due to his passion for skateboarding he try's his never gives up until he will finally learns the trick.

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An elevator car, with a mass of 450 kg is suspended by a single cable. At time = 0s, the elevator car is raised upward. The tens
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Answer:

33.33 m/s

Explanation:

m = 450 kg. T = 5000 N, t = 3 seconds,

let the net acceleration is a.

T = m a

a = 5000 / 450 = 11.11 m/s^2

u = 0 , v = ?

Let v be the velocity after 3 seconds.

Use first equation of motion

v = u + a t

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" <em>Energy is never created or destroyed.</em> "

All the rest is commentary.

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Answer:

  His kinetic energy increases, potential energy decreases

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  Snowboarder is starting from a height and moving to the down direction. As he moves down his velocity increases, we know that kinetic energy is given by the expression \frac{1}{2} mv^2, so as he moves his kinetic energy increases.

  When the snowboarder is starting his potential energy is maximum(Potential energy = mgh), as he comes down his potential energy decreases.

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