계산 방법 가속도 (a = (v − u)/t)

계산 average 가속도 with a = (v − u)/t. Signs, deceleration, rearrangements, 일ed examples, and a free 가속도 calculator.

What 가속도 Asks

가속도 is how quickly 속도 changes. A car can be fast and still have zero 가속도 if its 속력 stays constant. 속력ing up, slowing down, or changing direction all mean non-zero 가속도.

평균 가속도 over a time interval is a = (v − u) / t. Final 속도 v minus initial 속도 u, 시간으로 나눈 값 t. 단위 are m/s² when velocities are in m/s and time is in seconds.

If you already have u, v, and t (or a and one unknown), open the free 가속도 calculator first, then return here for signs, deceleration, and SUVAT links.

The 공식s

  • a = (v − u) / t — average 가속도.
  • v = u + at — rearrange for final 속도.
  • u = v − at — rearrange for initial 속도.
  • t = (v − u) / a — rearrange for time.

    • These forms assume constant (or average) 가속도 over the interval. If 가속도 changes with time, you need more advanced kinematics or calculus.

    Signs and Deceleration

  • Pick one direction as positive (usually the initial motion).
  • 속력ing up in the positive direction → a > 0.
  • Slowing down (braking) while moving positive → a < 0 (deceleration).
  • A negative a does not always mean “going backward” — it means 속도 is becoming less positive.

    • 가속도 vs 속도 vs 힘

    속도 says how fast and which way you move. See 속도 for v = d/t when 가속도 is not needed.

    Net 힘 causes 가속도: F = ma. Once you have a, use the 힘 calculator.

    When more than two of s, u, v, a, t are known under constant a, use the kinematics calculator or the

    SUVAT choice guide.

    단위

  • u, v → m/s (divide km/h by 3.6).
  • t → seconds.
  • a → m/s².
  • 변환 minutes to seconds before substituting.

    • 풀이 예제

    예제 1: 0 to 20 m/s in 5.0 s

    a = (v − u)/t = (20 − 0)/5.0 = 4.0 m/s².

    예제 2: braking

    u = 25 m/s, v = 5.0 m/s, t = 4.0 s. a = (5 − 25)/4 = −5.0 m/s² (deceleration of 5.0 m/s²).

    예제 3: find final 속도

    u = 10 m/s, a = 2.0 m/s², t = 6.0 s. v = u + at = 10 + (2)(6) = 22 m/s.

    예제 4: find time

    u = 0, v = 15 m/s, a = 3.0 m/s². t = (v − u)/a = 15/3.0 = 5.0 s.

    흔한 실수

  • Leaving km/h in a = (v − u)/t without converting to m/s.
  • Using minutes for t while velocities are in m/s.
  • Dropping the minus sign when an object slows down.
  • Confusing high 속력 with high 가속도.

    • 확인 It on the 계산기

    가속도 calculator — a = (v − u)/t.

    속도 calculator.

    힘 calculator.

    운동학 calculator.

    학습 a = (v − u)/t and confirm every home일 number on the calculator.

    문서

    • 탄성 위치 에너지 공식 (U = ½kx²): 계산기 & 예제
    • 계산 방법 전기 전력 (P = VI, I²R, V²/R)
    • 계산 방법 파동 속도 (v = fλ): 주파수 × 파장
    • 계산 방법 무게 (W = mg): 질량 vs 힘
    • 계산 방법 밀도 (ρ = m/V): 질량 ÷ Volume
    • 계산 방법 힘 (F = ma): Newton’s Second Law

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