a person at the edge of a vertical 12-m cliff throws a rock down at a velocity of 8.5 m/s, 55 degrees below the horizontal. How far from the base of the cliff does the rock land?

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?