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EmSAT Physics Flashcards

6 cards from real EMSAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 EmSAT Physics flashcards as text

  1. What is the formula for kinetic energy?

    Answer: KE = ½mv²

    Kinetic energy is KE = ½mv², where m is mass (kg) and v is velocity (m/s). It is the energy an object possesses due to its motion.

  2. A 2 kg object is lifted 5 m. What is its gravitational potential energy? (g = 10 m/s²)

    Answer: 100 J

    PE = mgh = 2 × 10 × 5 = 100 J. Gravitational potential energy depends on mass, gravity, and height.

  3. What is the law of conservation of energy?

    Answer: Total energy in a closed system remains constant

    The law of conservation of energy states that energy cannot be created or destroyed; it can only be transformed from one form to another. The total energy in a closed system remains constant.

  4. What type of energy does a compressed spring possess?

    Answer: Elastic potential energy

    A compressed spring stores elastic potential energy. When released, this energy converts to kinetic energy as the spring returns to its natural shape.

  5. What is the unit of energy?

    Answer: Joule

    The SI unit of energy is the Joule (J), defined as 1 kg·m²/s². The watt (W) is the unit of power (energy per unit time).

  6. A machine does 500 J of work in 10 seconds. What is its power?

    Answer: 50 W

    Power = Work ÷ Time = 500 J ÷ 10 s = 50 W.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. emsat.moe.gov.ae — Test delivery, eligibility, time limit, retake fee, retake policy, score release, exam format, exam information · verified Oct 2026
  2. mohesr.gov.ae — Eligibility · verified Oct 2026