Acceleration is
An object’s velocity’s rate of change An object’s velocity’s rate of change An object’s speed when its motion is constant An object’s speed when its motion is constant An object’s speed in a specific direction An object’s speed in a specific direction An object’s direction’s rate of change
An object's velocity's rate of change.
Acceleration is the rate at which an object's velocity changes over time. It is a vector quantity, which means it has both magnitude and direction. So, the correct definition of acceleration is: "An object's velocity's rate of change."
Acceleration is the rate at which an object's velocity changes over time. Velocity is a vector quantity that specifies both the object's speed and its direction of motion. Therefore, acceleration is the rate at which the object's speed or direction changes.
To calculate acceleration, you need to know the change in velocity and the time taken for that change to occur. The formula for acceleration is:
Acceleration (a) = Change in velocity (Δv) / Time taken (Δt)
The change in velocity can be calculated by subtracting the initial velocity (v1) from the final velocity (v2):
Δv = v2 - v1
And the time taken is simply the difference in time between the final and initial velocity measurements:
Δt = t2 - t1
Once you have these values, you can substitute them into the formula to find the acceleration. The resulting unit of acceleration is meters per second squared (m/s^2) since velocity is measured in meters per second (m/s) and time is measured in seconds (s).