if the resultant force acting on a 2.0 kg object is equal to (3.0î 4.0ĵ) n, what is the change in kinetic energy as the object moves from (7.0î – 8.0ĵ) m to (11.0î – 5.0ĵ) m?

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.

To find speed, or mph, use distance/time.

Iwould say the answer is b.  christians believed jesus was the messiah, or savior of man.  because most jews do not believe  in jesus

Mass of bob (g)will be the answer