Calculating Instantaneous Velocity Using Particle Coordinates

[Amel]

Homework Statement

The location of a particle (in m) is given by its x, y and z coordinates as function of the time (in s) as:

x = -33+29t and y = -11-27t+7t2 and z = 95-9t-5t2

Calculate the x-component of the instantaneous velocity at t = 5.00s.

Homework Equations

The Attempt at a Solution

Ok so I thought you just plug 5 into t for the x = equation but I guess not. How do I figure this out?

 

[philnow]

Plugging 5 for t in the X equation will give you the X-position of the particle at t=5s.

This is kind of a trick question, tbh. Differentiate the x equation, this will give you instantaneous X-velocity as a function of time. You'll see that it is time independent.

 

[Amel]

Cool thanks, the first time that's what I did but I must have entered it wrong because got it right this time.

Thanks, and yeah I see that t doesen't matter.