(9%) Problem 4: A hammer of mass m = 0.46 kg is moving horizontally at a velocity of v = 5.5 m/s when it strikes a nail and comes to rest after driving the nail a distance Ax = 0.75 cm into a board. select part E g? 33% Part (a) What is the duration of the imm, assuming the acceleration is constant during this time period, in terms of the given variables? At = 2 Ax/v 1/ Correct! D 88 33% Part (b) What was the average force exerted on the nail, in terms of the mass, initial velocity, and distance traveled? Fav= 9276| o: [3 At Ax ( ) 7 8 9 HOME 6 a b c 1" "l 4 5 6 *- d e f g / * 1 3 > h j k m + 0 END P S t v x/O BACKSPACE DEL CLEAR Submit Hint I Feedback I Igiveup! Grade Summary Deductions 2% Potential 98% Submissions Attempts remaining: E (% per attempt) detailed view 1 0% 2 0% 3 0% 4 0% (14%) Problem 10: A person is sitting at the very back of a canoe of length L, when the front just bumps into the dock. D A 50% Part (a) If the canoeist gets up and walks to the front of the canoe and there is no friction between the boat and the water, how far will they be from the dock? Express your answer in terms of the length of the canoe, the mass of the person mp, and the mass of the canoe mc. Grade Summary '1 = I Deductions 0% Potential 100% o: [3 6 ( 7 8 9 Submissions Attempts remaining: Q a d g 4 5 (M perattempt) h j k 1 2 3 detailed view L m 1110 + - 0 92 P t 1/0 Hints: 2% dcductionperhint, Hints remaining: 1 Feedback: 2% dcductionperfeedback. i A 50% Part (b) What will this distance be, in meters, if the length of the canoe is 3.1 In, the person's mass is 51 kg, and the canoe's mass is 72 kg