a = ?
Δx = 30 m
vf = 20 m/s
v0 = 0 m/s
t = ?
Use the last equation:
a = (vf2 - v02)/2Δx = (202 - 0)/(2 × 30) = 6.67 m/s
In a typical greyhound race, a dog accelerates to a speed of 20m/s over a distance of 30m. It then maintains this speed. What would be a greyhound's time in the 100m dash? Assume constant acceleration for the first period.
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