What do the d and p symbols mean in physics

[Quantum Velocity]

Hey guy! I've just started learn physics and i ran into a problem.
Can you guy let me know what is d and p mean in this

 

[DrClaude]

d represents the derivative (see Leibniz's notation) while p is momentum (with bold indicating vectors).

 

[Quantum Velocity]

Thank you! God bless you!

 

[Quantum Velocity]

But what dẻivative got to do with this equation

 

[DrClaude]

But what dẻivative got to do with this equation

Force is mass times acceleration, and acceleration is the time derivative (rate of change) of velocity. You are going to need calculus to understand this.

 

[Quantum Velocity]

oh