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Why do scientist often refer to deceleration as negative acceleration?
Wiki User
∙ 12y ago
Deceleration is often referred to negative acceleration because deceleration is not AA commonly used word.
Wiki User
∙ 12y ago
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When an object slows down does it have acceleration?
yes, but its value is negative ( as in -x m/s¨2). However it is most often noted as deceleration.
What is the decrease of speed called in physics?
Any change of velocity, including a decrease of speed, is described and measured as acceleration. Assuming the velocity and acceleration vectors point in the same direction, then in the case of decreasing speed, the magnitude of the acceleration is a negative value. Negative acceleration is often called deceleration, but that is just a special case of acceleration.
Acceleration and deceleration movements of the head often result in polar injuries in which?
widespread neuronal damage is incurred
Can an object have an eastward velocity while experiencing a westward accelerations?
The answer is yes and no.Acceleration is the rate of change of velocity. Velocity is speed plus direction.If an object is travelling eastward and slowing down in a straight line then its velocity is decreasing, it is still travelling eastward. However the force slowing the object is a westward force.A reducing acceleration (slowing down) is most often called a deceleration or negative acceleration. So you have a negative eastward acceleration.
When is acceleration due to gravity positive and when is it negative?
Acceleration due to gravity is negative when an object is moving up. Accl'n due to gravity is positive when an object is moving down (since gravity acts downwards on an object). ^Acceleration due to gravity is always negative, while the acceleration of the ball upward was positive due to what threw it, not gravity.
What is Rate of change of velocity of an object?
The generic term for change in velocity is acceleration. It may be positive or negative (often called deceleration in non-scientific use) or may be a change in vector (direction of travel). This is because velocity is speed (distance covered per time unit) and direction of travel combined.
What is the medical term meaning whiplash?
The medical term for whiplash is cervical acceleration-deceleration (CAD) injury. This term describes a neck injury caused by a sudden jerking motion of the head, often occurring in car accidents. Symptoms may include neck pain, stiffness, and limited range of motion.
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 a body moving with certain velocity in the direction of east have acceleration in the direction of west?
velocity is a vector quantity and also acceleration is a vector quantity. Suppose my automobile is travelling in north direction and I apply brakes to it then until the automobile stops it will move in north direction while the acceleration will act in south direction as brakes are applied.
What events can cause traumatic brain injury?
Types of incidents that can cause Traumatic Brain Injury TBI can include:Shaking a young baby or child - "Shaken Baby Syndrome" - often fatal in babiesViolent shaking of an adult, especially if the person has little control over their head / neck, example: disabled personSlip and fall when the head strikes a hard surface and rapidly goes from moving to impact.Traffic Accidents, even at slow speedsBeing struck on the face or chin with a closed fist. Example: Domestic violence. In fist-fights and brawls-- "One punch kill" refers to fights when one person only threw one punch and kills the victim.Sports injury, especially in football, soccer, basketballWartime head injuries
What is angular acceleration?
Angular acceleration is the trate of change of angular velocity, often represented by the letter alpha.
How fast does a bullet accelerate when it leaves a gun barrel?
A bullet does not accelerate after it leaves the barrel of a gun. It will decelerate. You could say it accelerates, but the acceleration would be negative. The bullet is accelerated by expanding gas as it moves down the barrel, and after it leaves the muzzle, there is no more acceleration imparted from expanding gas. We also find that air friction (drag) is acting to slow it down. Think this one through and it becomes obvious.
