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"Deceleration" is a decrease in speed, however you are still going in the SAME direction so it is POSITIVE.
"Retardation" is going in the OPPOSITE direction, therefore it is NEGATIVE.
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Class 9 -what is the formulae for finding retardation in physics?
Retardation or deceleration is negative accelaration formula for finding retardation is same as that of accelaration: v-u/t, where v is the final velocity, u is the initial velocity and t is the time taken. eg- a bus is travelling at 20 m/s. Brakes are applied to stop the bus. The total time taken by the bus to stop is 2 s. Find its retardation. ans- v=0; u=20; t=2 accelaration= 0-20/2 a= -10 m's^2 retardation= 10 m/s^2 (because retardation is negative accelaration)
How to calculate retardation?
Retardation = change in vel / time taken
How do you find retardation?
Retardation is the opposite of acceleration.It starts from a non zero uniform velocity.For this to happen any velocity (not zero) of a vehicle should go on decreasing.The rate of decreasing may be anything.If it is decreasing then that is retardation.
How do you measure or calculate deceleration during a collision?
In a controlled test condition (like crash tests on cars) an accelerometer is used to measure the rate of deceleration. It should be possible to estimate the deceleration following a collision if the speed of the vehicles at the moment of the collision is known. We could do this by measuring the amount the car was crushed/dented during the collision. We know the vehicle decelerated from its starting speed over this distance so we can estimate the average deceleration. I believe there are more sophisticated techniques used by accident investigators. As an aside, in strict physics terminology, slowing down (as well as any other change in velocity) is acceleration, not deceleration however deceleration is often used to imply a reduction in speed in every day English. If you want to get into this further have a look at "Are speed and velocity the same?" and remember that acceleration is also a vector.
How can you find the retardation of a curve in a speed time graph?
Calculate the gradient of the curve which will give the acceleration. Change the sign of the answer to convert acceleration into retardation.
What is the difference between deceleration and retardation?
Deceleration refers to any reduction in speed, while retardation specifically refers to a decrease in speed due to an opposing force, like friction or air resistance. Essentially, all cases of retardation involve deceleration, but not all deceleration is due to retardation.
When an object slows it has what acceleration?
Retardation or negative acceleration or deceleration.
Which is also called as retardation or deceleration?
Braking is another term used for retardation or deceleration. It refers to the process of reducing the speed or velocity of an object or vehicle.
Is retardation the opposite to accelaration?
I think the most accurate antonym for acceleration is deceleration.
Is retardation positive or negative acceleration?
Retardation is a form of acceleration that is negative, meaning that the object is slowing down. Positive acceleration refers to the object speeding up.
What does retardation mean in physics?
Retardation means deceleration or the negativity to speed. It's synonyms Disintegrate, Prejudice, Destruct etc. The formula of retardation is V - U/ T where V is the final position U is the initial motion and T is the time taken by object.
What are the two common terms for decreases in velocity?
Deceleration is the decrease in velocity over time, while negative acceleration is the decrease in velocity in a specific direction.
What do you call a negative acceleration?
A negative acceleration is called deceleration or retardation. It refers to the decrease in speed or velocity of an object over time.
When an object slows down it has what acceleration?
When an object slows down, it has negative acceleration, also known as deceleration. This means the object's velocity is decreasing over time.
What are the two terms sometimes used to describe slowing down?
Two terms sometimes used to describe slowing down are deceleration and retardation. Deceleration refers to a decrease in speed over time, while retardation generally denotes a decrease in velocity due to a force acting in the opposite direction of motion.
What is acceleration and retardation?
Acceleration is the rate of change of velocity over time, where an object is speeding up. Retardation, also known as deceleration, is the rate at which an object slows down or decreases in velocity over time.
What is a negative acceleration called?
You'll find a lot of people who call it "deceleration". But in real Physics, there's no such thing.There's only positive or negative acceleration, depending on whether the acceleration is inthe same or opposite direction compared to what you decided to call the positive direction.Negative acceleration is sometimes, but not always, associated with something that's slowing down.
