Deceleration is synonymous with slowing down or is related to the relative directions of velocity and acceleration. The meaning of the word in common language differs from its meaning in physics.
In everyday language, the word deceleration is typically used to signify the opposite of acceleration. When motion or speed increases, the body is said to accelerate. Conversely, when motion or speed decreases, the body is said to decelerate. Another way to describe deceleration is as a decrease in the magnitude of velocity.
However, in physics, acceleration is defined as a change in velocity when the motion is unidirectional. Acceleration means that acceleration and velocity point in the same direction, meaning both positive and negative velocities can be measured. For example, a positive velocity is described as an occasion where time increases and the velocity at which the object moves away from its starting point increases. Negative velocity is where time decreases and the velocity at which the object moves away from its starting point decreases.
Deceleration refers to when acceleration and velocity point in opposite directions. As with acceleration, deceleration may be described in terms of both positives and negatives. Negative velocity combined with positive acceleration is one type of deceleration, while a positive velocity with negative acceleration is another type.Learn More
There is no such thing as a formula for deceleration; there is only a formula for acceleration. To find the acceleration, subtract the initial velocity from the final velocity and divide that sum by the time taken. If that formula yields a negative answer, it indicates a negative acceleration, or deceleration.Full Answer >
Rate of deceleration is expressed as negative acceleration. The negative sign indicates that deceleration takes place in the opposite direction as acceleration. Both are as expressed in standard units m/s^2.Full Answer >
A deceleration lane is a traffic lane on an expressway that gives a driver a brief opportunity to slow his vehicle prior to reaching an exit ramp. These lanes are important, as they allow drivers to prepare for slower city driving after high-speed highway driving.Full Answer >
The term known as the Middle Ages is synonymous with the Dark Ages for several reasons as the period between 500-1500 A.D. included political turmoil, social unrest and the spread of disease. The Middle Ages brought great change to Europe in many respects, including social mobility, politics and the way of life. Some changes proved beneficial, but the time period experienced negative effects from the change too.Full Answer >