Explanation:
Acceleration and the other term are the same physical phenomenon - just with opposite affects. Acceleration increases velocity, while the other term that begins with the letter "R" reduces.
***(Brainly's language filter is blocking the use of the second term in my answer.)***
Acceleration is defined as the rate of change of the velocity of an object per unit of time...
[tex]a = \frac{dv}{dt}[/tex]
Acceleration would be a POSITIVE (+) quantity, while the r-word would be negative (-).
