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Anni [7]
3 years ago
8

A ball is drop from the top of a building. You choose the top of the building to be the reference level while your friend choose

the bottom. Explain wether the energy calculates using these two reference level is the same or different for the following situations
Physics
1 answer:
KATRIN_1 [288]3 years ago
4 0

Explanation:

Based on the references, the calculated potential energy is the same if the reference used is the same or different.

Potential energy is the energy due to the position of a body.

It is the energy at rest in body.

The change in potential energy is given as:

    ΔE  = E₂ - E₁

E₂ is the final potential energy and E₁ is the initial potential energy.

Since when the body comes to rest after falling through a height, the final potential energy is 0.

The change in potential energy does not depend on the reference.

learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

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All of the following are dimensions of progressive overload except multiple choice specificity. time. intensity. frequency.
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<h3>What is progressive overload?</h3>

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6 0
2 years ago
An 80 N rightward force is applied to a 10 kg object to accelerate it to the right.
ella [17]

net force = 30 N

mass = 8.16 kg

acceleration = 3.68 m/s²

<h3>Further explanation</h3>

Given

80 N force applied

mass of object = 10 kg

Friction force = 50 N

Required

Net force

mass

acceleration

Solution

  • net force

Net force = force applied(to the right) - friction force(to the left)

Net force = 80 - 50 = 30 N

  • mass

Gravitational force(downward) : F = mg

m = F : g

m = 80 : 9.8

m = 8.16 kg

  • acceleration

a = F net / m

a = 30 / 8.16

a = 3.68 m/s²

3 0
2 years ago
What is the average speed of a car that traveled 222.0 miles in 4.596 hours?
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Answer:

48.3mph

Explanation:

Given that

Distance = 222.0miles

Time = 4.596hours

Average speed = total distance/total time

= 222.0miles/4.596

= 48.3mph

Hence the average speed is 48.3mph

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In physics, for a given object, work divided by distance will equal
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