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ankoles [38]
3 years ago
8

A car stops in 130 m. If it has an acceleration of -5 m/s2 what was the cars starting velocity?

Physics
1 answer:
Tatiana [17]3 years ago
8 0

Answer:

<u>We are given:</u>

displacement (s) = 130 m

acceleration (a) = -5 m/s²

final velocity (v) = 0 m/s      [the cars 'stops' in 130 m]

initial velocity (u) = u m/s

<u>Solving for initial velocity:</u>

From the third equation of motion:

v² - u² = 2as

replacing the variables

(0)² - (u)² = 2(-5)(130)

-u² = -1300

u² = 1300

u = √1300

u = 36 m/s

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