Question

Difference between velocity speed rate and accelerations

Answer 1

Answer:

Speed or Velocity?

Speed is the rate of motion, or the rate of change of position. It is expressed as distance moved (d) per unit of time(t). Speed is a scalar quantity with dimensions distance/time. Speed is measured in the same physical units of measurement as velocity, but does not contain an element of direction. Speed is thus the magnitude component of velocity. Velocity contains both the magnitude and direction components.

Acceleration,  is defined as the rate of change of velocity. It is thus a vector quantity with dimension length/time². In SI units, acceleration is measured in meters/second².  

To accelerate an object is to change its velocity, which is accomplished by altering either its speed or direction (like in case of uniform circular motion) in relation to time.

Explanation:

Acceleration is a vector quantity. When either velocity or direction changes, there is acceleration (or deceleration).  

To accelerate an object requires the application of a force.