The graph above represents an object moving with a a) constant velocity eliminate b) constant acceleration c) constant positive acceleration d) constant negative acceleration

the answer is d

D) constant negative acceleration

Explanation:

Acceleration is defined as the ratio of changing of the velocity per unit time:

where v is the velocity and t the time.

In a velocity-time graph, as the one above, the ratio between change in velocity and change in time corresponds to the slope of the curve. In fact, the slope of the curve is defined as

where

is the increment in the y-variable, which corresponds to the change in the velocity,

is the increment in the x-variable, which corresponds to the change in the time,

So, since the slope in this case is 1) constant and 2) negative, this means that the acceleration is also constant and negative.

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.