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cpm1210 Group TitleBest ResponseYou've already chosen the best response.0
Acceleration ia defined as a change in velocity over the change of time. According to that you can't have a negative velocity. The lowest you could be going is 0
 one year ago

exploringphysics Group TitleBest ResponseYou've already chosen the best response.0
YES , IF VELOCITY DECREASES .dw:1355882836836:dw THE SLOPE GIVES ACC. IE. VE
 one year ago

ghazi Group TitleBest ResponseYou've already chosen the best response.1
well for example ,when you apply brakes suddenly on a vehicle that is called as retardation or negative of acceleration, in this case final velocity is less than the initial one so difference of final and initial is negative
 one year ago

TarunRaina Group TitleBest ResponseYou've already chosen the best response.0
negative acceleration or retardation means the rate of decrease of velocity with time
 one year ago

Krishnadas Group TitleBest ResponseYou've already chosen the best response.0
Yes...It is Deceleration...velocity decreases
 one year ago

Kainui Group TitleBest ResponseYou've already chosen the best response.1
Most people here don't understand acceleration, or at least haven't made the distinction between speed and velocity. You can have a negative acceleration and be speeding up. All the negative sign tells you is direction. For instance if you drop something off a building and you set it so that 0 was the ground and the top of the building was +10, then when you dropped it it would be accelerating downwards AND INCREASING speed. The velocity is the direction and speed, and it's an important distinction to make when understanding acceleration.
 one year ago

chongkhengwye Group TitleBest ResponseYou've already chosen the best response.0
The term 'negative acceleration' is ambiguous. it can mean deceleration i.e. speed is decreasing OR It can mean that an object is accelerating in the negative direction. e.g. consider a stone thrown vertically upwards in the absence of air resistance. If one takes upwards as positive, the stone always has negative acceleration. BUT on its way upwards, it is decelerating, while on its way downwards, it is increasing its speed!
 one year ago
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