A stunt performer swings on a 34.0 m long rope initially inclined at an angle of 40.0° with the vertical. (Assume the rope has negligible mass.) (a) What is the stunt performer's speed (in m/s) at the bottom of the swing if he starts from rest? m/s (b) What is the stunt performer's speed (in m/s) at the bottom of the swing if instead he pushes off with a speed of 4.40 m/s? m/s

Principles of Physics: A Calculus-Based Text
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Chapter7: Conservation Of Energy
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A stunt performer swings on a 34.0 m long rope initially inclined at an angle of 40.0° with the vertical. (Assume the rope has negligible mass.)
 
(a) What is the stunt performer's speed (in m/s) at the bottom of the swing if he starts from rest?
m/s
 
(b) What is the stunt performer's speed (in m/s) at the bottom of the swing if instead he pushes off with a speed of 4.40 m/s?
m/s
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