College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 125

A hockey puck sliding along the ice to the left hits the boards head-on with a speed of 35 m/s. As it reverses direction, it is in contact with the boards for 0.095 s, before rebounding at a slower speed of 11 m/s. Determine the average acceleration the puck experienced while hitting the boards. Typical car accelerations are m/s 2. Comment on the size of your answer, and why it is so different from this value, especially when the puck speeds are similar to car speeds.