How to Find the Modulus of Velocity and Acceleration?

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SUMMARY

The discussion focuses on calculating the modulus of velocity and acceleration for a point defined by the radius vector \(\vec{r}=\vec{c}t+\vec{b}\frac{t^{2}}{2}\). The velocity is derived as \(\vec{v}=\vec{c}+\vec{b}t\) and the acceleration as \(\vec{a}=\vec{b}\). To find the modulus, the modulus of a vector is established as the square root of the dot product of the vector with itself, specifically \(|\vec{v}| = \sqrt{\vec{v} \cdot \vec{v}}\) and \(|\vec{a}| = \sqrt{\vec{a} \cdot \vec{a}}\).

PREREQUISITES
  • Vector calculus
  • Understanding of dot products
  • Basic physics concepts of velocity and acceleration
  • Familiarity with vector notation
NEXT STEPS
  • Learn how to compute the dot product of vectors
  • Study the properties of modulus in vector analysis
  • Explore applications of velocity and acceleration in physics
  • Investigate the implications of constant vectors in motion equations
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Students studying physics or mathematics, particularly those focusing on kinematics and vector analysis, as well as educators looking to clarify concepts of velocity and acceleration.

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Homework Statement



The radius vector of a point depends on time t, as [tex]\vec{r}=\vec{c}t+\vec{b}\frac{t^{2}}{2}[/tex], where [tex]\vec{c}[/tex] and [tex]\vec{b}[/tex] are constant vectors. Find the modulus of velocity and acclereation at any time t.



The Attempt at a Solution


[tex]\vec{v}=\vec{c}+\vec{b}t[/tex]

[tex]\vec{a}=\vec{b}[/tex]

But how shall I find the modulus?
 
Last edited:
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The modulus of a vector v is the square root of v dot v.
 

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