An engineer is given the ask of comparing the fuel efficiency of four car models

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

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?