# Question #841cf

##### 1 Answer

Oct 11, 2014

Change in velocity is called acceleration. To calculate the acceleration of an object over a given time interval you can measure the initial velocity (

If a car accelerates from rest to 32 m/s in 4 seconds, you can calculate the acceleration to be:

If you know a little calculus, the instantaneous velocity is simply the derivative of the velocity with respect to time. This is also the second derivative of the position vs. time.