Work and Energy Quiz

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Questions and Answers

What is the formula for work in physics?

  • Time divided by distance
  • Velocity times time
  • Force times distance (correct)
  • Mass times acceleration

Which of the following is a unit of energy?

  • Newton
  • Joule (correct)
  • Watt
  • Pascal

What happens to the potential energy of an object as it falls?

  • It remains constant
  • It increases
  • It decreases (correct)
  • It becomes zero

Which of the following is an example of kinetic energy?

<p>A moving car (A)</p> Signup and view all the answers

Manakah yang merupakan contoh energi kinetik?

<p>Sebuah mobil yang sedang melaju di jalan raya (C)</p> Signup and view all the answers

Apa yang terjadi pada energi potensial suatu benda saat benda tersebut jatuh?

<p>Energi potensial berkurang (D)</p> Signup and view all the answers

Apa rumus untuk menghitung usaha dalam fisika?

<p>$W = F \times d \times cos(\theta)$ (D)</p> Signup and view all the answers

Satuan untuk energi adalah...

<p>Joule (D)</p> Signup and view all the answers

Apa yang dimaksud dengan usaha dalam fisika?

<p>Produk dari gaya yang dikerjakan pada suatu benda dan perpindahan benda tersebut (B)</p> Signup and view all the answers

Apa yang dimaksud dengan energi kinetik?

<p>Energi yang dimiliki oleh suatu benda karena geraknya (B)</p> Signup and view all the answers

Apa yang terjadi pada energi potensial suatu benda saat benda tersebut naik ke ketinggian yang lebih tinggi?

<p>Energi potensial bertambah (D)</p> Signup and view all the answers

Apa yang dimaksud dengan energi potensial?

<p>Energi yang disimpan oleh suatu benda (D)</p> Signup and view all the answers

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Study Notes

Work and Energy in Physics

  • The formula for work in physics is W = F × d, where W is work, F is force, and d is displacement.
  • Units of energy include Joule (J), calorie (cal), and kilowatt-hour (kWh).

Kinetic Energy

  • Kinetic energy is the energy of motion, and an example of it is the energy of a moving car or a rolling ball.

Potential Energy

  • Potential energy is the energy of position or stored energy, and it increases as an object is lifted to a higher height.
  • As an object falls, its potential energy decreases.

Work and Energy Concepts

  • Work is the transfer of energy from one object to another, and it is a measure of the amount of energy transferred.
  • Energy can be transferred from one form to another, such as from potential energy to kinetic energy.

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