Jennifer is running at 11 m/s. If Jennifer weighs 622 N, what is the magnitude of her linear momentum? Take the acceleration due to gravity as 9.80 m/s. Please round your answer to the nearest whole number (integer). The head of a hammer (m = 2.68 kg) moving at 5.76 m/s strikes a nail and bounces back with the same speed after an elastic collision lasting 0.002 s. What is the magnitude of the average force the hammer exerts on the nail? Please round your answer to the nearest whole number (integer). A 463-kg cannon at rest contains a 27-kg cannon ball. When fired, the cannon ball leaves the cannon with a speed of 127 m/s. What is the recoil speed (the magnitude) of the cannon? Please do not include the negative sign in your answer. Please round your answer to one decimal place.