devjennings devjennings
  • 11-10-2020
  • Physics
contestada

What is the final velocity of a drag racer that has constant acceleration and finishes a
1/4 mile race in 15 seconds?

Respuesta :

MathPhys
MathPhys MathPhys
  • 11-10-2020

Answer:

120 mph

Explanation:

Given:

Δx = 0.25 mi

v₀ = 0 mi/s

t = 15 s

Find: v

Δx = ½ (v + v₀) t

0.25 mi = ½ (v + 0 mi/s) (15 s)

v = 0.0333 mi/s

v = 120 mi/h

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