Which statements describe acceleration? Check all that apply.Negative acceleration occurs when an object slows down in the positive direction.Negative acceleration occurs when an object slows down in the negative direction.Negative acceleration occurs when an object speeds up in the negative direction.Positive acceleration occurs when an object speeds up in the positive direction.Positive acceleration occurs when an object speeds up in the negative direction.Positive acceleration occurs when an object slows down in the negative direction.
Answer
A
Negative acceleration occurs when an object slows down in the positive direction.
B
Negative acceleration occurs when an object slows down in the negative direction.
C
Negative acceleration occurs when an object speeds up in the negative direction.
D
Positive acceleration occurs when an object speeds up in the positive direction.
E
Positive acceleration occurs when an object speeds up in the negative direction.
F
Positive acceleration occurs when an object slows down in the negative direction.
Explanation
Acceleration points in the direction of the change in velocity. An object moving in the positive direction while slowing down has negative acceleration, and one moving in the negative direction while speeding up also has negative acceleration. Moving faster in the positive direction means positive acceleration. An object moving in the negative direction while slowing down has positive acceleration because its velocity is becoming less negative.
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