If a projectile is launched from a cliff at a speed of 83m/s and it takes 3.8 seconds to reach the ground, how high is the cliff?

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Right anwser gets marked brainliest newton's discovery concerning how fast an object will change speed is the: 1st law 2nd law 3rd law universal gravitation

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.