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Answer:
A1. Speed is the rate of change of distance(basically how much distance(m) has been covered in a particular time(s)). Velocity is the rate of change of displacement( change of distance in a particular direction with respect to time) , and acceleration is the rate of change of velocity per unit of time.
A2. Acceleration ability shows the rate of change of velocity of an athlete in a time interval or in a definite distance, thus starting from rest how fast they reach their maximal or submaximal speed.
A3. Two factors affect the acceleration of an object: the net force acting on the object and the object's mass.
Explanation
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