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pishuonlain [190]
3 years ago
12

A car slows down from 21 m/s to rest in a distance of 63m. Assuming the car has a constant acceleration, calculate the time it t

ook to come to a stop.
Physics
1 answer:
vladimir2022 [97]3 years ago
5 0

Answer:

-3.5 m/s²

Explanation:

  • Initial Velocity = 21m /s
  • Final velocity = 0m/s
  • Distance = 63 m .
  • Acclⁿ = ?

<u>We </u><u>know</u><u> </u><u>that</u><u> </u><u>:</u><u>-</u><u> </u>

\longrightarrow Stopping distance = u²/2(-a)

\longrightarrow 63m = (21m/s)² / -2a

\longrightarrow a = - 21 * 21 / 63 * 2 m/s²

\longrightarrow a = - 3.5 m/s²

<em>*</em><em>*</em><em>Edits</em><em> </em><em>are</em><em> </em><em>welcomed</em><em>*</em><em>*</em>

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7 0
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If you're referring to the car's battery, then the current is quite steady, because the battery is a purely DC storage container.

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