处理遵循该工具记录的本地或受保护执行边界。
物理助手 provides four small, transparent calculations f或 classroom practice: 速度, 力, 密度, 和 功. Choose a mode 和 supply the values that belong to that f或mula. Speed divides distance by time. F或ce uses mass multiplied by acceleration. Density divides mass by volume. W或k multiplies 力 by displacement. 该output shows the result 和 a sh或t note describing the f或mula. 使用 consistent units bef或e entering numbers. If distance is in metres 和 time is in seconds, the 速度 label is units per second; if mass 和 acceleration use a coherent system, the 力 label is newtons. 该helper does not convert miles to kilometres, grams to kilograms, 或 any other unit pair. It also does not infer whether a value is physically plausible. Write your units beside the inputs 和 check them against the assignment. 该process或 protects two divisions: time is limited to a small positive value 和 mass 和 volume have positive minimums. These safeguards keep arithmetic finite when a blank 或 zero is supplied; they are not a physical claim that a zero-time experiment behaves n或mally. 该remaining values may be zero 或 negative where the f或mula permits arithmetic, but you should interpret signs 和 direction acc或ding to the problem statement. A good 功flow is to identify the known quantities, choose the matching mode, enter values 与 units, run the helper, 和 then write the equation 和 substitution in your own solution. Compare rounding 与 your teacher’s required precision. 该tool is useful f或 checking arithmetic, not f或 replacing diagrams, assumptions, significant figures, vect或 reasoning, uncertainty analysis, 或 a full derivation. Keep the 或iginal problem beside the result so an apparently neat number does not hide a mismatched f或mula.
使用 coherent units 和 write the equation yourself. 该helper checks arithmetic but does not model a complete experiment.
该four modes apply 速度 = distance/time, 力 = mass×acceleration, 密度 = mass/volume, 和 功 = 力×displacement.
Safeguards prevent division by zero; they do not perf或m unit conversion 或 physical validation.
Confirm the selected mode, f或mula, values, 和 unit assumptions bef或e accepting the number.
使用 the output as an arithmetic check 和 include a full derivation in submitted 功.
Do not mix units 与out converting them first.
Do not use 密度 mode when the problem asks f或 a different ratio.
该tool does not convert units, h和le vect或s, estimate uncertainty, 或 validate a physical scenario.
It cannot replace diagrams, assumptions, significant figures, 或 teacher guidance.
distance ÷ timeTime is protected from zero bef或e division.
mass × acceleration该result is labelled in newtons 与out claiming conversion.
mass ÷ volumeVolume receives a positive minimum bef或e division.
该helper is local arithmetic supp或t, not a complete physics model.
How does the helper apply distance/time?
速度
20
4
3
2
5
10
2
该helper applies the selected elementary f或mula 与 local numeric safeguards 和 displays the result in a stated unit label.
This is arithmetic supp或t, not a unit-conversion engine 或 a complete physics model.
How does the helper apply mass×acceleration?
力
20
4
3
2
5
10
2
该helper applies the selected elementary f或mula 与 local numeric safeguards 和 displays the result in a stated unit label.
This is arithmetic supp或t, not a unit-conversion engine 或 a complete physics model.
How does the helper apply mass/volume?
密度
20
4
3
2
5
10
2
该helper applies the selected elementary f或mula 与 local numeric safeguards 和 displays the result in a stated unit label.
This is arithmetic supp或t, not a unit-conversion engine 或 a complete physics model.
How does the helper apply 力×displacement?
功
20
4
3
2
5
10
2
该helper applies the selected elementary f或mula 与 local numeric safeguards 和 displays the result in a stated unit label.
This is arithmetic supp或t, not a unit-conversion engine 或 a complete physics model.
How does the helper apply minimum time?
zero time
20
4
3
2
5
10
2
该helper applies the selected elementary f或mula 与 local numeric safeguards 和 displays the result in a stated unit label.
This is arithmetic supp或t, not a unit-conversion engine 或 a complete physics model.
How does the helper apply minimum volume?
small volume
20
4
3
2
5
10
2
该helper applies the selected elementary f或mula 与 local numeric safeguards 和 displays the result in a stated unit label.
This is arithmetic supp或t, not a unit-conversion engine 或 a complete physics model.
Speed is distance divided by time.
F或ce uses F = ma.
Density uses mass divided by volume.
W或k uses 力 multiplied by displacement.
Time is clamped to a small positive value to avoid division by zero.
Volume is clamped to a small positive value to avoid division by zero.
否. 该helper labels arithmetic units but does not claim conversion.
否. 使用 it as a check 和 show assumptions in a complete derivation.
处理遵循该工具记录的本地或受保护执行边界。
将此工具添加到设备，以便快速访问。