ilayda asked in Science & MathematicsPhysics · 4 years ago

# I believe this equation is incorrect. Am I right? Pressure = Force * Velocity?

Update:

The pressure here is absolutely pressure, because the question is stated exactly as I have above.^^ :D I didn't modify anything.

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• 4 years ago

You're right, it's wrong.

You need to learn units analysis (some call it dimensional analysis). Had you learned it you'd know the equation is wrong because the units between the RHS and the LHS of the = sign are inconsistent.

Pressure units ~ kg.m/s^2//m^2 ~ kg/(m.s^2) on the LHS

Force units ~ kg.m/s^2

Velocity units ~ m/s

So Force X Velocity ~ kg.m/s^2 * m/s ~ kg.m^2/s^3 on the RHS and you see this is not kg/(m.s^2)

Clearly incorrect.

• ilayda4 years agoReport

I was in the process of learning it when I asked this, but Ive got it perfect now ;) Thanks.

• 4 years ago

It's incorrect

Pressure = force/area

• Steven
Lv 7
4 years ago

Pressure is force per area.

Power is force times velocity

• 4 years ago

You are correct. Pressure = Force/area.

However, if you are trying to interpret the equation P = F * v, that equation is correct if P stands for POWER (energy per unit time).

• 4 years ago

The equation P=F v is correct, but note the capital P here that denotes power (energy per unit time expended by a force F keeping an object traveling at speed v.)

• 4 years ago

yes it is incorrect

pressure = force /area

force= mass*velocity/time= mass*acceleration