Question

Define acceleration and average speed
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Answer 1

Answer:

Speed: Speed is a scalar quantity which means it has no direction. ... It denotes how fast an object is moving. If the speed of the particle is high it means the particle is moving fast and if it is low, it means the particle is moving slow.

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Answer 2

Answer:

Average speed :

The average speed of a body in a certain time interval is the distance covered by the body in that time interval divided by time.

Acceleration:

Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.