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bonufazy [111]
2 years ago
10

PLS HELP. WILL GIVE BRAINLIEST. PLS THIS IS WORTH 35 POINTS ON MY TEST

Physics
2 answers:
Nata [24]2 years ago
5 0

Answer:

18m/s^2

Explanation:

Vf = Vi + at

t = distance/ average velocity

(120 + 0)/2 = 60 (average velocity)

400m/60m/s = 20/3 s

insert into first equation:

120 = 0 + a(20/3)

360 = 20a

18 = a

HOPE THIS HELPS!!!

Greeley [361]2 years ago
3 0
  • Initial velocity=0=u
  • Final velocity=v=120m/s
  • Distance=s=400m
  • Acceleration=a

Using third equation of kinematics

\\ \rm\hookrightarrow v^2-u^2=2as

\\ \rm\hookrightarrow 120^2=800a

\\ \rm\hookrightarrow 14400=800a

\\ \rm\hookrightarrow a=16m/s^2

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ryzh [129]

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<u>Note:</u>

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DanielleElmas [232]

Answer:

   t_total = 23.757 s

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the elevator starts with zero speed

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         t₁ = v / a

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in this time he runs

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           x₂ = x_total - x₁

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this distance travels at constant speed,

           v = x₂ / t₂

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6 0
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F = 0.5(19.2) / (2(0.012) = 400 N

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