When the direction is reversed velocity = 0
v = ds/dt = 6t^2 - 42t + 60 = 0
t^2 - 7t + 10 = 0
(t - 5)(t - 2) = 0
t = 2 s and 5 s which are the times when the direction is reversed
Position at t = 2 = 2(2)^3 - 21(2)^2 +60(2) + 3 = 55 feet
at t = 5 position = 28 feet
Acceleration = dv/dt = 12t - 42
At t = 2 acceleration = -18 ft s-2
At t = 5 ............... = 18 ft s-2
Answer:
24.10
Step-by-step explanation:
23 and 23.05 are less than 23 .07
24.17 is greater than 24.11
The only number between is 24.10
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Answer:
2:3:4
Step-by-step explanation:
100:150:200
10:15:20
2:3:4
hope it helps
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Work out the total change:
76 - 46 = 30
Divide this by the number of days:
30/5 = 6
As the temperature decreased, it would have a minus value in front of it
Thus, the answer is option B
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