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1: Kinematics 5: Advanced Mechanics

P10004 .m

Two balls are launched from the top of a cliff. Ball A has an initial velocity of 8.00 m.s-1 at an angle of 30.0o w.r.t. the horizontal and ball B has an initial velocity of 12.0 m.s-1 at 60.0o to the horizontal. The height of the cliff above sea level is 100 m.

Ignoring air resistance, calculate:

A.              The time taken for both ball to reach their maximum heights.

B.              The maximum heights of the balls above sea level.

C.              The speed of the balls at their maximum height.

D.             The relative position of ball B when ball A is at its maximum height.

E.               The relative velocity of ball B when ball A is at its maximum height.

F.               The horizontal distance from the base of the cliff that the balls enter the sea water,

G.             The velocities of the balls as they enter the sea water.

 

View solution below only after you have completed the answering the question.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Solution

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If you have any feedback, comments, suggestions or corrections please email:

Ian Cooper School of Physics University of Sydney

ian.cooper@sydney.edu.au