A rock is thrown from a height of 10 m. It is initially thrown at an angle of 65° below the horizontal. If it takes 0.8 s to hit the ground, what was the rock’s initial speed? Air resistance can be neglected. A 20.3 m/s B 8.58 m/s C 7.33 m/s D 18.1 m/s E 9.47 m/s

The best answer is (a) which is universal law is in effect at all times. it is constantly at play in everything we do and governs our lives. it is also important to note that universal law applies to not only everything on earth, but everything in the universe as well, which is another reason why it is in effect at all times.

Bis the answerhope it !

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.