Current location - Education and Training Encyclopedia - University rankings - In college physics, why does the instantaneous velocity formula derive the first derivative of t from the potential vector instead of the first derivative of t from the displacement? Please advise, th
In college physics, why does the instantaneous velocity formula derive the first derivative of t from the potential vector instead of the first derivative of t from the displacement? Please advise, th
In college physics, why does the instantaneous velocity formula derive the first derivative of t from the potential vector instead of the first derivative of t from the displacement? Please advise, thank you! v = dr/dt

Read this passage from beginning to end several times.

Dr is the displacement. When Δ t→ 0, the limit value dr represents the displacement Δ r.

Maybe your understanding is wrong.

δr is the displacement, and dr also represents the displacement.

The potential vector is R, and dr refers to the variation (i.e. displacement) of the potential vector.

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