a stone is thrown straight downward with initial speed of 8.0 m/s from a height of 25 m. find a. the time it takes to reach the grpund and b. the speed with which it strikes.

Question

gschibby · Answer

Do you have the equations in front of you? The ones for constant linear acceleration?

gschibby · Answer

$$r=r _{0}+v _{0}t+\frac{ at ^{2} }{ 2 }$$

gschibby · Answer

this is the one you need, r0 is zero so you can scratch that. Then rearrange it for t, and plot in your values ;)