Yes, it is negative acceleration
By definition in any English language dictionary 'acceleration' means 'gaining velocity or speed'
That is like saying when a light bulb is off it is negative on
No, when anything is slowing down it is decelerating.
A car can be slowing down while still accelerating if its speed is decreasing but the direction of its velocity is changing. For example, if a car is moving in a curve, its speed may be decreasing but it is still accelerating towards the center of the turn. This is known as centripetal acceleration.
It is decelerating any time it is not accelerating or is stopped. Decelerating means slowing down.
Could be bad u-joints in the driveshaft.
One tire has a belt separation.
Yes it has negative acceleration, which is acceleration in the opposite direction of travel. It is called deceleration.
Acceleration is a change in velocity. Assuming a constant direction, if you're speeding up that is positive acceleration. If you are slowing down, that's negative acceleration. Either way you are accelerating.
False. An object is slowing down when its speed is decreasing, which means it is decelerating, not accelerating in the direction of motion.
An object that is accelerating is either speeding up or slowing down. If the acceleration is in the same direction as the velocity, the object is speeding up. If the acceleration is opposite to the velocity, the object is slowing down.
Yes. If you are traveling eastward but slowing down, your acceleration would be westward.
This depends on how you define your axes. Let's assume they're defined as normal (being positive is accelerating, negative is breaking, and for velocity positive is driving forward, negative is driving in reverse). Then of course, you are speeding up. This simply means the train was in reverse, but it's accelerating in the positive direction now.
My car is accelerating at 10 miles per hour per hour.