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Physics Equations for Test Preparation: Speed, Acceleration, Energy

Enhance your understanding of key physics equations including speed, acceleration, average speed, net force, force, mechanical energy, kinetic energy, and potential energy. Learn how to calculate and apply these equations for your test success!

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Physics Equations for Test Preparation: Speed, Acceleration, Energy

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  1. Math Equations To help you for your test

  2. Speed (s) • Speed = distance/time • Many units – look at the problem • m/s, km/hr, m/min, mi/hr

  3. Acceleration (a) Acceleration = final speed – starting speed time Units vary as well, pay attention to the problem m/s2, km/hr2

  4. Average Speed • Average Speed = total distance total time Units are the same for speed m/s, km/hr, etc.

  5. Net Force • Sum of all forces • Add for same direction • Subtract for opposite directions • UNIT: Newton (N)

  6. Force • Force = mass x acceleration • F=ma • Newtons (N)

  7. Mechanical Energy • ME = potential + kinetic • ME = PE + KE • Joules (J)

  8. Kinetic Energy • KE = ½ mass x velocity2 • KE = 1/2mv2 • Joules (J)

  9. Potential Energy • GPE = mass x gravity x height • GPE = mgh • g=10 m/s2 • Joules (J)

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