(Solved): (11%) Problem 9: Rafael drops a hard rubber ball, of mass m = 205 g, onto the pavement. He drops i ...

(11%) Problem 9: Rafael drops a hard rubber ball, of mass m = 205 g, onto the pavement. He drops it from a height h? = 3.3 m, and it bounces back to a height h? = 1.7 m. While the ball is in contact with the ground, the ground exerts a non-constant force on the ball as shown in the figure. During the time interval At? the force rises linearly to Fmax, and during the time interval At? the force returns linearly to zero as the ball leaves the ground. Refer to the figure. t At? At2 50% Part (a) Enter an expression for the magnitude of the impulse delivered to the ball by the ground, in terms of Fmax and the time intervals At? and I= 1/2 (Fmax ) (At? + At? ) ? Correct! ? 50% Part (b) For the time intervals At? = 3.5 ms and At? = 4.5 ms, what is the magnitude of the maximum force between the ground and the ball, in newtons? Grade Summary Deductions 0% Potential 100% Fmax F Fmax