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sashaice [31]
2 years ago
9

A 1,800kg rollercoaster is going down a hill with a kinetic energy of 25,000J. What

Physics
1 answer:
Softa [21]2 years ago
6 0

The velocity of the rollercoaster going down the hill is equal to 5.270 m/s.

<u>Given the following data:</u>

  • Mass of rollercoaster = 1,800 kilograms.
  • Kinetic energy =25,000 Joules.

To calculate the velocity of the rollercoaster going down the hill:

<h3>Formula for kinetic energy.</h3>

Mathematically, kinetic energy is calculated by using the formula;

K.E = \frac{1}{2} MV^2

<u>Where:</u>

  • K.E is the kinetic energy.
  • M is the mass of an object.
  • V is the velocity of an object.

Making V the subject of formula, we have:

V =\sqrt{\frac{2K.E}{M} }

Substituting the given parameters into the formula, we have;

V =\sqrt{\frac{2\times 25000}{1800} }\\\\V=\sqrt{27.7778}

Velocity, V = 5.270 m/s

Read more on kinetic energy here: brainly.com/question/17081653

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Answer:

Explanation:

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energy going to neutrino .

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5 0
3 years ago
Object A has a mass m and a speed v, object B has a mass m/2 and a speed 4v, and object C has a mass 3m and a speed v/3. Rank th
borishaifa [10]
<h2>The rank is : P_B>P_A=P_C .</h2>

We need to rank the objects according to the magnitude of their momentum.

We know momentum ,P = m\times v{ here m is mass and v is velocity }

Momentum of object A , P_A = m v.

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Momentum of object C  , P_C= 3m\times\dfrac{v}{3}=mv.

Now, we can rank them in order of  their magnitude of momentum .

P_B>P_A=P_C.

Hence, this is the required solution.

Learn More :

Momentum

brainly.com/question/7957458

5 0
3 years ago
Select the correct answer.
Natali [406]

its b hoped i helped

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How can you use the movement of molecules to determine when a phase change has occurred?
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Answer:

These energy exchanges are not changes in kinetic energy. They are changes in bonding energy between the molecules. If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance. The example we will use here is ice melting into water.

Explanation:

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