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根据初速度、末速度和时间,快速计算平均加速度,支持多种单位,结果精准。
Select the quantity you want to calculate. The other three will be used as known inputs.
Formulas
a = (v − v₀) / t
t = (v − v₀) / a
v = v₀ + a · t
v₀ = v − a · t
These formulas apply to uniformly accelerated linear motion. Input velocities can be in different units; they will be internally converted to m/s for calculation.

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单摆计算器
根据摆长和重力加速度计算单摆周期与频率,支持反向求解摆长或重力加速度。
在物理学习或工程分析中,手动推导平均加速度既耗时又容易出错。本工具基于匀变速直线运动的定义 a = (v - u) / t,只需输入初速度、末速度和时间,即可秒算平均加速度,并自动处理单位换算,帮您摆脱公式记忆负担,直接获得准确数值结果。
输入的速度和时间应为数值,且时间不能为零或负数,否则无法计算。加速度结果依赖单位体系,请确保初速度、末速度使用同一单位。本工具完全在浏览器端运行,不记录任何输入数据,请放心使用。若需批量处理,可多次重复操作,单次只计算一组数据。
平均加速度是矢量,只有大小和方向。实际应用中,若物体做直线运动,可取初速度方向为正方向,利用结果的正负快速判断加减速状态。例如初速度 20 km/h,末速度 5 km/h,时间 2 s,先统一单位为 m/s:20 km/h≈5.56 m/s,5 km/h≈1.39 m/s,则加速度 a=(1.39-5.56)/2≈-2.085 m/s²,负值表示减速。本工具已内置此类换算逻辑,建议在涉及不同单位时直接使用,避免手动误差。