Question

As shown in the figure , a superball with mass m equal to 50 gramsis dropped from a height of h = 1.5 \m} . It collides with a table,then bounces up to a height of h_{\rm f}= 1.0\; {\rm m} . Theduration of the collision (the time during which the superball isin contact with the table) is = 15 . In this problem, take thepositive y direction to be upward, and use g = 9.8\; {\rm m/s^2}for the magnitude of the acceleration due to gravity. Neglect airresistance.


Find the y component of the momentum, p_{{\rm before}{,}y}, of theball immediately before the collision.
Express your answer numerically, to two significant figures.
y} =



Part B
Find the y component of the momentum of the ball immediately afterthe collision, that is, just as it is leaving the table.
Express your answer numerically, to two significant figures.
p_{{\rm after}{,}y} =



Part C
Find the y component of the time-averaged force F_{{\rm avg}{,}y},in newtons, that the table exerts on the ball.
Express your answer numerically, to two significant figures.
F_{{\rm avg}_y} =



Part D
Find J_y, the y component of the impulse imparted to the ballduring the collision.
Express your answer numerically, to two significant figures.
J_y =


Part E
Find K_{\rm after}-K_{\rm before}, the change in the kinetic energyof the ball during the collision, in joules.
Express your answer numerically, to two significant figures.
K_{\rm after}-K_{\rm before} =