(7%) Problem 9: A walker of mass 75 kg is moving at 1. I mph. Randomized Variables m = 75 kg v. = 1.1 mph @th Doing S site is strict A 50% Part (a) What is the kinetic energy of the walker, in joules? Grade Summary K = Deductions Potential sin() cos tan( 8 9 HOME Submissions Attempts remain cotan() asin() acos() E 4 5 6 0% per attempt atan() acotan() sinh() 3 detailed view cosh( tanh() cotanh() END Degrees O Radians VC BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. 4 50% Part (b) If her dog, of mass 13 kg, is walking with her, how fast, in meters per second, would it have to be running to have the same kinetic energy