EVERYDAY SCIENCE

Detailed explanation-1: -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.

Detailed explanation-2: -As a vector quantity, acceleration has both magnitude and direction. The direction of acceleration depends on if the object is speeding up or slowing down, and the direction the object is moving.

Detailed explanation-3: -Acceleration is a change in velocity, either in its magnitude-i.e., speed-or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant.

Detailed explanation-4: -Changes in speed or direction are called acceleration.