PHYS121 - Learning Assignment: Impulse-Momentum Watching the video, what is the total impulse the astronaut experienced during the time they had the fire extinguisher turned on? From the video, what are the astronaut's initial and final momentum values? Compare the impulse imparted to the astronaut to their change in momentum. A 50g ball is dropped from a hand holding it initially at a position 2m above the ground. What is the ball's velocity when it reaches the ground? (assume downward is the negative y direction for this problem) The ball hits a force sensor on the ground that produces a plot of Force vs time as shown here during the time the ball is colliding with the ground. The vertical axis of the graph represents Newtons of force and the horizontal axis represents milliseconds of time during the collision process. What is the total impulse felt by the ball during its collision with the ground? What is the ball's velocity immediately after the collision has ended (i.e. when it first begins moving back upward)? What is the maximum height the ball will reach after bouncing off the ground