Engineering Acceleration Engineering First Semester

[germanmath]

Homework Statement

Acceleration

Relevant Equations

Engineering, biomedical, University

The function x (t) = 4 (m · s) t − 1 + 10 m describes the position of a mass point. In which direction does the speed point at time t = 1 s? Is the amount of speed constant or not? does the velocity function change its sign for t> 0 at some point? And in which direction does the acceleration point at time t = 1 s?

could someone help me please with Solving this task?

 

[PeroK]

According to the guidelines, you have to show your best attempt at this problem. See:

https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/

 

[germanmath]

Oh of course, I am sorry.

I would say that the mass point positions is in the height of 10m...
To get the speed I assume that I have to do the derivitation and then I have to calculate the speed for the value of t=1. is it right?

 

[PeroK]

Oh of course, I am sorry.

I would say that the mass point positions is in the height of 10m...
To get the speed I assume that I have to do the derivitation and then I have to calculate the speed for the value of t=1. is it right?

Is the formula supposed to be? $$x(t) = (4 m/s)(t-1s) + 10m$$ In any case, you get the velocity from the position by differentiation.

 

[germanmath]

No, I am sorry I didnt noticed that it is incorrectly. The formula is supposed to be: x(t) =4(m*s)(t^-1) +10meter

okey thanks a lot for your answer :)