Find velocity and acceleration using derivatives

In summary, velocity is a measure of an object's rate of change of position over time, while acceleration is a measure of an object's rate of change of velocity over time. To find velocity and acceleration, we use derivatives of position and velocity functions respectively. An example of finding velocity and acceleration using derivatives is given with the function x(t) = 3t^2 + 2t + 5. The units used to measure velocity and acceleration are typically meters per second (m/s) and meters per second squared (m/s^2) respectively. Velocity and acceleration are related because acceleration is the rate of change of velocity and their directions are the same.
  • #1
carlotta5b
1
0

Homework Statement


we know that the simple armonic motion is characterized by x(t)=Acos(wt), find velocity and acceleration of s.h.m. using derivatives.

Homework Equations

The Attempt at a Solution


i should find derivatives of the component of the vector R (Rcos(wt),Rsin(wt)).
 
Physics news on Phys.org
  • #2
first derivative is velocity, second derivative is acceleration
 
  • #3
I don't see why you would change this into a 2D problem. It is phrased as a 1D problem where x is position. Velocity should just be ##\frac{d}{dt} x(t) ##
 
  • Like
Likes DuckAmuck

Related to Find velocity and acceleration using derivatives

1. What is the definition of velocity and acceleration?

Velocity is a measure of the rate of change of an object's position over time. It is a vector quantity, meaning it has both magnitude (speed) and direction. Acceleration, on the other hand, is a measure of the rate of change of an object's velocity over time. It is also a vector quantity.

2. How do you find velocity and acceleration using derivatives?

The derivative of position with respect to time is velocity, and the derivative of velocity with respect to time is acceleration. This means that to find velocity, we take the derivative of the position function, and to find acceleration, we take the derivative of the velocity function.

3. Can you provide an example of finding velocity and acceleration using derivatives?

Sure! Let's say we have an object whose position is given by the function x(t) = 3t^2 + 2t + 5. To find its velocity, we take the derivative, which is v(t) = 6t + 2. And to find its acceleration, we take the derivative again, which is a(t) = 6.

4. What units are used to measure velocity and acceleration?

Velocity is typically measured in meters per second (m/s), while acceleration is measured in meters per second squared (m/s^2). However, other units can also be used, such as miles per hour for velocity and feet per second squared for acceleration.

5. How are velocity and acceleration related?

Velocity and acceleration are related because acceleration is the rate of change of velocity. This means that if an object is accelerating, its velocity is changing. If an object has a constant velocity, its acceleration is 0. Furthermore, the direction of acceleration is in the same direction as the change in velocity, so if an object is accelerating in a certain direction, its velocity is also changing in that direction.

Similar threads

  • Introductory Physics Homework Help
Replies
2
Views
611
  • Introductory Physics Homework Help
Replies
5
Views
599
  • Introductory Physics Homework Help
Replies
4
Views
1K
  • Introductory Physics Homework Help
Replies
22
Views
3K
  • Introductory Physics Homework Help
Replies
5
Views
1K
  • Introductory Physics Homework Help
Replies
15
Views
3K
  • Introductory Physics Homework Help
Replies
6
Views
976
  • Introductory Physics Homework Help
Replies
3
Views
2K
  • Introductory Physics Homework Help
Replies
4
Views
1K
  • Introductory Physics Homework Help
Replies
1
Views
1K
Back
Top