A hammer of mass m = 0.465 kg is moving horizontally at a velocity of v = 5.5 m/s when it strikes a nail and comes to rest after driving the nail a distance Δx = 1.15 cm into a board. a)What is the duration of the impact, in seconds, assuming the acceleration of the hammer was constant?  b)What was the average force, in newtons, exerted on the nail?

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Projectile Motion