Question
A 0.450-kg hammer is moving horizontally at 7.00 m/s when it strikes a nail and comes to rest after driving the nail 1.00 cm into a board. (a) Calculate the duration of the impact. (b) What was the average force exerted on the nail?
1. $2.86\times 10^{-3}\textrm{ s}$
2. $1100 \textrm{ N}$