A stone is dropped from the edge of a cliff. What is the velocity of the stone in m/s after 3 seconds?

Question

anonymous · Answer

Just asking, do you know what is velocity?

anonymous · Answer

velocity is distance over time right?

anonymous · Answer

well that is speed, but yeah

anonymous · Answer

good enough

anonymous · Answer

yes that is right, thinking about physics

anonymous · Answer

how do i know what the distance is?

anonymous · Answer

what force is acting on the stone?

anonymous · Answer

gravity?

anonymous · Answer

yep

anonymous · Answer

so how does gravity tie in with the formula

anonymous · Answer

the acceleration of gravity can be approximated at -9.8m/s^2

anonymous · Answer

so it gravity the distance? i'm still confused

anonymous · Answer

you can multiply the velocity by the seconds.

9.81(3)=29.43ms

y=5(9.81)(3)carot sign(2), g is gravity (9.81m/s carot sign2)

y=5(9.81)(3) carot sign 2 y=44.145

It is just the same as the last one and just use 4 instead of 3 7=78.48m

anonymous · Answer

so the velocity is 78.48?