PHYSICS HIGH SCHOOL

a 64kg skateboarder on a 2.0kg skateboard is on top of a ramp with a vertical height of 5.0 m what is the skateboarders maximum kinetic energy at the bottom of the ramp

Answers

Answer 1
Answer:

The maximum kinetic energy of the skateboarders at the bottom of the ramp is 3234 J.

What is kinetic energy?

Kinetic energy is the energy of a body due to motion.

To calculate the maximum kinetic energy of the skateboarders at the bottom of the ramp, we use the formula below.

Formula:

  • K.E = Mgh............ Equation 1

Where:

  • M = mass of the skateboarder and the skateboard
  • K.E =  maximum kinetic energy of the skateboarders at the bottom of the ramp
  • h = Height of the ramp
  • g = acceleration due to gravity.

From the question,

Given:

  • M = (2+64)M = 66 kgh = 5 mg = 9.8 m/s²

Substitute these values into equation 2

  • K.E = 66×5×9.8K.E = 3234 J

Hence, the maximum kinetic energy of the skateboarders at the bottom of the ramp is 3234 J.

Learn more about kinetic energy here: brainly.com/question/25959744

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Answer 2
Answer: The formula for a kinetic energy KE of a falling body is
KE = mgh
where m = mass, g = acceleration due to gravity (9.8 m/s^2, constant), h = height.

The total mass of a skateboader and a skateboard is 64 + 2.0 = 66 kg.

Finally,
KE = 66*9.8*5.0 = 32340 J

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Which of the following is the best example of a proper hypothesis? Orange popsicles taste sweeter than grape popsicles. If two objects are dropped at the same height, the heavier object will hit the ground first. Children who wear backpacks do better academically. I think there is no effect on hearing if you listen to loud music only three hours a day.

Answers

Answer:

If two objects are dropped at the same height, the heavier object will hit the ground first.

Explanation:

A proper hypothesis has the form:

"If ... , then ... ".

Now, why the other sentence aren't hypothesis?

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This sentence its an OPINION. It may be true that, for the speaker/writer, orange popsicles taste sweeter, but this is an subjective opinion, and difficult to test.

  • Children who wear backpacks do better academically.

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If children wear backpacks, then they do better academically.

  • I think there is no effect on hearing if you listen to loud music only three hours a day.

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Answer:

Answer is:If two objects are dropped at the same height, the heavier object will hit the ground first.

Explanation:

How can i find the acceleration?(rope and grinder have no weight) *** sorry for my english

Answers

The main formula to be used here is

                       Force = (mass) x (acceleration).

We'll get to work in just a second.  But first, I must confess to you that I see
two things happening here, and I only know how to handle one of them.  So
my answer will be incomplete, but I believe it will be more reliable than the
first answer that was previously offered here.

On the right side ... where the 2 kg and the 3 kg are hanging over the same
pulley, those weights are not balanced, so the 3 kg will pull the 2kg down, with
some acceleration.  I don't know what to do with that, because . . .

At the same time, both of those will be pulled up by the 10 kg on the other side
of the upper pulley.

I think I can handle the 10 kg, and work out the acceleration that IT has.

Let's look at only the forces on the 10 kg:

-- The force of gravity is pulling it down, with the whatever the weight of 10 kg is.

-- At the same time, the rope is pulling it UP, with whatever the weight of 5 kg is ...
that's the weight of the two smaller blocks on the other end of the rope. 

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Answers

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Answers

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In a classroom demonstration, students are using a Slinky to observe and learn about wave properties. If the Slinky has a period of 0.333 seconds, what is the frequency?

Answers

Answer:

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