The two words are synonyms. However, in physics there is a more precise definition, which is a change in an object's position in a specified direction with time.
So in everyday language we could say the speed of the car is 60 miles per hour, but in physics you'd say its velocity is 60 miles per hour North/South/East/West.
Both of them travel through space at the same speed
If the speed is constant then equal distances are covered in equal intervals of time If acceleration is constant then equal change in velocity occurs in equal intervals of time.
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similarities
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Motion is about speed of location change, acceleration is about speed change.
Acceleration is the rate of change of velocity over time, while velocity is the rate of change of position over time. Both acceleration and velocity are vector quantities, meaning they have both magnitude and direction. Acceleration can either be in the same direction as velocity (causing an increase in speed) or in the opposite direction (causing a decrease in speed).
Velocity . . . what speed and direction something is moving. Acceleration . . . how fast the speed and/or direction of its motion are changing.
Speed is the rate of change in distance, whereas velocity is speed and direction of travel. Acceleration is the change in velocity (including direction).
Speed is the rate at which an object is moving, while acceleration is the rate at which an object's speed is changing. Speed is a scalar quantity (only magnitude), while acceleration is a vector quantity (has both magnitude and direction).
Acceleration is the time rate of change of speed. Acceleration = speed/time.
Acceleration is directly proportional to the change in speed. If the speed increases, acceleration is positive. If the speed decreases, acceleration is negative. The magnitude of acceleration is determined by the rate at which the speed changes.
Speed is represented by the slope of a distance-time graph, where steeper slopes indicate faster speed. Acceleration is represented by the slope of a speed-time graph, where a steeper slope indicates a greater acceleration.
There is a huge difference between constant speed and constant acceleration. Constant speed is when the object is travelling constant, no change in its velocity and acceleration or in other words no extra force to speed up. Constant acceleration when the object is acceleration constant, it means that the speed of the object is change at the same rate each second. The acceleration rate at which the object is travelling is constant. for example, when a car is stationary at a traffic light and it starts acceleration, picking up speed but the rate of acceleration will not constant because the amount of force applied differs each second due to the acceleration rate.
Tangential acceleration is the change in speed of an object moving in a circular path, while centripetal acceleration is the acceleration that keeps an object moving in a circular path. Tangential acceleration affects the speed of the object, while centripetal acceleration affects the direction of the object's motion.
The relationship between velocity and acceleration affects how an object moves. When acceleration is positive, velocity increases, causing the object to speed up. When acceleration is negative, velocity decreases, causing the object to slow down. If acceleration is zero, velocity remains constant, and the object moves at a steady speed.
Acceleration is the rate that speed changes.