Solution for QID #2939: A hammer of mass m = 0.46 kg is moving horizontally at a vel | StudyHelpMe

A hammer of mass m = 0.46 kg is moving horizontally at a velocity of v = 4.5 m/s when it strikes a nail and comes to rest after driving the nail a distance Ax = 0.95 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? Q6. A person carries a plank of wood 2.0 m long with one hand pushing down on it at one end with a force Fi and the other hand holding it up at 50 cm from the end of the plank with force F2. a. If the plank has a mass of 22 kg and its center of gravity is at the middle of the plank, what is the force F2, in newtons? b. If the plank has a mass of 22 kg and its center of gravity is at the middle of the plank, what is the force F1, in newtons?