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quietcity100
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Homework Statement
True or False
Homework Equations
Deceleration is always in the negative direction.
The Attempt at a Solution
true.
Deceleration refers to the decrease in velocity, or the rate of change of an object's speed, over time. It is the opposite of acceleration and is often seen in situations where an object is slowing down or coming to a stop.
Deceleration is typically measured in meters per second squared (m/s²) or feet per second squared (ft/s²). It can also be measured in terms of the change in velocity divided by the change in time, known as the average deceleration.
The main factors that can affect deceleration include the mass of the object, the force acting on the object, and the surface or medium the object is moving on. Other factors such as air resistance, friction, and incline can also play a role in deceleration.
To calculate deceleration, you can use the formula a = (vf - vi) / t, where a is the deceleration, vf is the final velocity, vi is the initial velocity, and t is the time it takes for the object to decelerate. Alternatively, you can also use the formula a = -v/t, where v is the change in velocity and t is the time.
Deceleration can be seen in many everyday situations, such as a car slowing down before coming to a stop at a red light, a person riding a bike and gradually slowing down to make a turn, or a plane descending before landing. It can also be observed in sports such as running, where a runner slows down before reaching the finish line.