(1 point) The figure below shows the position r of an object at time ts during t
ID: 2891522 • Letter: #
Question
(1 point) The figure below shows the position r of an object at time ts during the first 7 seconds. Enter your answers using interval notation. Do not include t = 0 and t = 7 in your answers. Assume that the endpoints of all intervals are integers. "Forward" means the tr-direction and "backward" means the -r-direction. The object is moving forward when te The object is moving backward when te The object is experiencing forward acceleration when te The object is experiencing backward acceleration when te S The object is moving faster and faster when te The object is moving slower and slower when teExplanation / Answer
Forward meaning r is increasing with time...
So, ( 0, 2) U (4 , 6)
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backward :
(2 , 4) U (6 , 7)
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Forward acceleration :
Happens when its concave up and r is increasing
(0 , 1) U (4 , 5)
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Reverse acc :
Happens when it is concave down and r is decreasing with time
(2,3) U (6,7)
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Faster and faster :
(0,1) U (2,3) U (4,5) U (6,7)
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Slower and slower :
(1,2) U (3,4) U (5,6)
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