A 63.2 kg climber finds herself dragling over the edge of a cliff. She’s connected by a rope of negligible mass to a rock located 48.6 m from the edge of the cliff, and help is on the way. However, it will be 36.5 s before help arrives, and the ice is frictionless. How massive must the rock be if she’s to be saved?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain