Can we define acceleration as the rate of change of speed??

Dear Student,
Answer to your question is given below:
Yes, we can define acceleration as the rate of change of speed.  Acceleration is defined as the rate of change of velocity. Velocity is a vector, which means it contains a magnitude (a numerical value) and a direction. So the velocity can be changed either by changing the speed or by changing the direction of motion (or both).
Regards,

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