A softball of mass 1.0 kg strikes a hard wall perpendicularly with an initial speed of 29 m/s. The softball is in contact with the wall for 0.43 seconds, and then rebounds straight
back with a speed of -15 m/s. What average force was applied to the softball by the wall?
Use impulse and momentum to solve and round your answer to 2 decimals.

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?