What is the acceleration?

\overline {a} = {v - v_0}{t} = \frac{\Delta v}{\Delta t}

\overline{a}=average acceleration

v=final velocity

v_0=starting velocity

t=elapsed time

Explanation: math i hoped it helped.

the bal will not change its velocity.

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d