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## A boat is traveling at 43.2 m/s. It then goes down a faster part of the river and is now going 144 m/s which gave the boat an a

Question

A boat is traveling at 43.2 m/s. It then goes down a faster part of the river and is now going 144

m/s which gave the boat an acceleration of 25.2 m/s2. How long did it take the boat to reach its

new speed?

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Mathematics
1 year
2021-09-05T08:15:45+00:00
2021-09-05T08:15:45+00:00 1 Answers
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## Answers ( )

Answer:Step-by-step explanation:boat was at 43.2 m/s speed increase to 144 m/s

if the boat was moving 0 m/s and increased to 144 m/s – 43.2 m/s accelerating at 25.2 m/s², it would take the same amount of time

25.2 m/s² × x seconds = (144 – 43.2) m/s solve for x in seconds

x seconds = 100.8 m/s / 25.2 m/s²

x seconds = 4 (m/s /ms²) = 4 (m/s × s²/m) = 4 seconds the units match

x = 4 seconds