What is the distance traveled in the nth second?

[lionely]

Homework Statement

A particle moves along the x-axis in such a way that its distance x cm from the origin after t
t seconds is given by the formula x= 7t + 12t². What distance does it travel in the nth second?

Isn't it 7(n) + 12(n)²?

 

[rollingstein]

Isn't it 7(n) + 12(n)²?

Nope.

 

[rollingstein]

distance it travels in the nth second = x(n) - x(n-1)

 

[lionely]

Oh ... thank you.

 

[lionely]

n+1 would be the distance traveled in each second after?

 

[rollingstein]

n+1 would be the distance traveled in each second after?

Show how? I doubt it.

 

[HallsofIvy]

n+1 would be the distance traveled in each second after?

No! "n" is not a distance at all. "n" and so "n+1" are times not distances.