a 2.61 kg block is at the top of a 10.2 m long incline, tilted at 15.0°, with uk = 0.220. what is the block's final velocity when it reaches the bottom of the incline?

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

J. j. thomson’s experiment disproved the theory that an atom

If a simple machine reduces the strength of a force, what must be increased?