Question

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Answer 1

Answer:

B

Explanation:

acceleration = change in speed / change in time

for 1, speed increases over time, so positive acceleration

for 3, speed decreases over time, so negative acceleration (or deceleration)

Answer 2

The answer is B, because 1 is acceleration and 3 is deceleration. 2 and 4 are staying at a constant speed which means it isn’t speeding or slowing but it’s staying the same.