Class Management | Help Energy and Work Part 2 Begin Date: 4/1/2022 12:01:00 AM -- Due Date: 4/15/2022 11:59:00 PM End Date: 5/15/2022 11:59:00 PM (10%) Problem 9: Afootball of mass m = 1 kg is thrown at an initial velocity of v0 = 19 m/s at an y angle of 0 = 42 with respect to the horizontal. The ball reaches a maximum height of h. Let gravitational potential energy be zero at ground level. B-tllccxpcrltaxom D A 33% Part (a) Give an expression for the initial velocity vector in rectangular form. Write your answer in terms of v0, 0, and the unit vectors i and j. Grade Summary V = | Deductions 0% Potential 100 % Submissions Attempts remaining: 5 (0% per attempt) 7 dEiled view J0 BACKSPACE I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: I] % deduction per feedback. E A 33% Part (b) Write an expression for the potential energy, Ug, of the football at the peak of its trajectory, in terms of the variables given in the problem statement. E A 33% Part (c) How high did the ball travel, it, in meters? Class Management | Help Energy and Work Part 2 Begin Date: 4/1/2022 12:01:00 AM -- Due Date: 4/15/2022 11:59:00 PM End Date: 5/15/2022 11:59:00 PM (10%) Problem 10: A student created this diagram to account for the energy during a physical process, but no caption was included. + 0- Ui + Ki + W = Us + K; initial final A Which statement would best caption the diagram? O After reaching terminal velocity, a ball continues its descent towards the ground. Grade Summary Deductions 0% O A box near the bottom of a rough inclined plane has an initial velocity up the plane. Potential 100% O A block placed on a rough horizontal surface is used to compress a horizontal spring. The block is released from rest, separating from the spring, and continuing across the surface. Submissions A baseball is thrown from one player to another, being caught at the same height as it was released. Attempts remaining: 5 (0% per attempt) O A box near the top of a rough inclined plane has an initial velocity down the plane. detailed view O An astronaut has dropped a feather, from rest, on the moon. Submit Hint Feedback I give up! Hints: 0 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback