[10%) Problem 10: The gure shows ahullet with mass of {3.124 kg moving horizontally toward a block of mass 1.53 kg that is at rest on ahorizontal,
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(10%) Problem 6: A student produces a power of P = 0.86 kW while pushing a block of mass m = 69 kg on an inclined surface making an angle of 0 = 8.5 degrees with respect to the horizontal. The coefficient of kinetic friction between the block and the incline is #* = 0.18. Randomized Variables X V P = 0.86 kW m = 69 kg 8 = 8.5 degrees m Hx = 0.18 Otheexpertta.com A Write an expression for the maximum constant speed, Vm: the block travels at under the power applied by the student. Grade Summary Deductions 0% Potential 100% cos(a) cos(() cos(0) 7 8 9 HOME Submissions sin(o) sin(() sin(0) 4 5 6 Attempts remaining: 10 (10% per attempt) B 1 2 3 detailed view A g + 0 END P VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up!

(10%) Problem 7: A batter hits a baseball m = 0.43 kg from rest with a force of F = 83 N. The ball is in contact with the bat for t = 0.22 s. It is observed that the ball leaves the bat with an angle of 0 = 21 degrees with respect to the horizontal. h X Otheexpertta.com 4 50% Part (a) How long was the ball in the air if it was hit from the top of a cliff with a height of h = 115 m. C 4 50% Part (b) How far did the ball travel horizontally in meters? Grade Summary dy = Deductions 0% Potential 100% sin cos() tan( 7 8 9 HOME Submissions cotan( asin( acost E 5 6 Attempts remaining: 10 (10% per attempt) atan() acotan( sinh() 1 2 3 detailed view cosh() tanh() cotanh() () END O Degrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up!

[10%) Problem 3: A Nil—kg rugby player is initially.r running at 15 mfs in the positive direction, but collides head—on with a padded goalpost and experiences a backward force of 1. .73 x 104 N for 5.45 x 10—2 s. W D Q Calculate the final velocity in the horizontal direction of the rugby player= in meters per second. © Degree 5 O Submit I give up! Grade Summary Deductions DE":- Potentia] 100% Submissions Attempt: remaining: E {1.0% per attempt) detailed View

(10%) Problem 9: A young 43-kg ice hockey goalie, originally at rest, deflects a 0.145-kg hockey puck slapped at him at a speed of 33.5 m/s. In this problem, take the original direction of the puck as positive. A 50% Part (a) Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would the final velocity of the puck, in meters per second, be in this case? Grade Summary Vf.2 = Deductions 0% Potential 100% sin( cos( tan( 7 8 9 HOME Submissions cotan asin() acos( 4 5 6 Attempts remaining: 10 10% per attempt) atan( acotan( sinh( 2 3 detailed view cosh() tanh( cotanh() + 0 END O Degrees O Radians BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 5% deduction per hint. Hints remaining: 2 Feedback: 5% deduction per feedback. 4 50% Part (b) Suppose the goalie and the ice puck have an elastic collision and the puck is reflected back in the direction from which it came. What would the final velocity, in meters per second, of the goalie be in this case?

[10%) Problem 10: The figure shows ahullet with mass of {3.124 kg moving horizontally toward a block of mass 1.53 kg that is at rest on ahorizontal, frictionless table. The initial speed ofthe bullet is 2 52 this. The bullet embeds itself into the block and the bullet and block move together as one unit after the collision. D '3 50% Part (a) What is the speed (in this) of the bullet—block combination after the collision? v=| Submit Hint Feedback I give up! Hints: 5% deduction per hint. Hints remaining: 1 Feedback: 5% deduction per feedback. Grade Summary Deductions 0% Potential 100% Submissions Attempt: remaining: 1 D m per attempt) — detailed View E a 50% Part (b) If it took 3.95 ms for the bullet to change speed from 252 m.-"s to the final speed after impact= then what was the magnitude of the average force (in N) exerted by the block on the bullet during this time?

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