An astronaut standing on a platform on the moon drops a hammer. if the hammer falls 6.0 meters vertically in 2.7 seconds, what is its acceleration? a. 1.6m/s²
b. 4.4m/s²
c. 2.2m/s²
d. 9.8m/s²

Explanation:

We have equation of motion s = ut + 0.5 at²

        Initial velocity, u = 0 m/s

        Acceleration, a = ?

        Displacement, s = 6 m

        Time, t = 2.7 s      

     Substituting

                      s = ut + 0.5 at²

                      6 = 0 x 2.7 + 0.5 x a x 2.7²

                      a = 1.65 m/s²

Acceleration is 1.65 m/s²

Option A is the correct answer.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods