Atourist drops a penny off the empire state building. the penny hits the ground 12 seconds later. what is the velocity of the penny when it hits the ground?

117.6 m/s downward

Explanation:

The penny is moving with uniform accelerated motion (free fall motion), so we can find its vertical velocity at time t with the following suvat equation:

v = u + at

where

v is the velocity at time t

u is the initial velocity

a is the acceleration

The penny starts at rest, so

u = 0

Also, the acceleration is the acceleration of gravity,

where we have chosen upward as positive direction, so the acceleration is negative, since it is downward.

Substituting t = 12 s, we find the velocity of the penny when it hits the ground:

downward, since the sign is negative.

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada