Question

What is the final velocity of a drag racer that has constant acceleration and finishes a

1/4 mile race in 15 seconds?

Answer 1

120 mph

Step-by-step 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