Which of these results from destructive interference?

two waves subtract from each other.

two waves bounce off each other.

two waves add to each other to form a large wave.

two waves increase their speed together

What is created when solids,liquids,an gases mix with one another

What is the momentum of a 2 kg object moving at 15 meters per second

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s