When a rattlesnake strikes, its head acceler-
ates from rest to a speed of 21 m/s in 0.46 s
seconds. Assume for simplicity that the only
moving part of the snake is its head of mass
How much (average) power does the rat-
tlesnake need to accelerate its head that fast?
Answer in units of W.
ap physics - Damon, Friday, February 25, 2011 at 5:27pm
m = 0.2 kg
Ke = (1/2) m v^2 = work done = power*time
power = [(1/2) m v^2] / .46 Watts