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QUESTION 1

A ball of mass 0.5 kg, initially at rest, is kicked directly towards a fence from a point 32 meters away. The velocity of the ball as it leaves the kicker's foot is 20 meters per second at an angle of 37 degrees above the horizontal. The top of the fence is 2.5 meteres high. The kicker's foot is in contact with the ball for 0.05 second. The ball hits nothing while in flight and air resistance is negligible.

a) Determine the magnitude of the average net force exerted on the ball during the kick.

b) Determine the time it takes for the ball to reach the plane of the fence.

c) Will the ball hit the fence? If so, how far below the top of the fence will it hit? If not, how far above the top of the fence will it pass?

QUESTION 2

A 5.0 kg monkey hangs initially at rest from two vines A and B. Each of the vines has a length of 10 meters and negligible mass. Vine A is 30 degrees above horizontal then a 90 degree angle, and 60 degree of vine B.

a) Determine the tension in vine B while the monkey is at rest.

The monkey releases vine A and swings on vine B. Neglect air resistance.

b) Determine the speed of the monkey as it passes through the lowest point of its swing.

c) Determine the tension in vine B as the monkey passes through the lowest point of its first swing.

QUESTION 3

http://ljhs.sdcs.k12.ca.us/faculty/mteachworth/physics-folder/units/ap-practice-problems-html/vert-circle-n-proj/ap-vertical-circle-n-proj.html [Broken]

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# Homework Help: Determine the time it takes for the ball to reach the plane of the fence

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