Objective: • Analyze the motion of objects in free fall
• Graph the displacement, velocity, and acceleration as a function of time for an object in free fall
• Evaluate the effect of gravity on an object in free fall
Consider a ball dropped from rest on Earth where the acceleration due to gravity is g=-98 m/s2. If the
ball is dropped from some height above the ground and falls freely (neglect air resistance), fill out the
table with the displacement (Ay), velocity (v), and acceleration (a) of the ball at each second (t).
Consider down as the negative direction.
Identify known variables at any given
time, t:
Select which equation to use to find displacement,
Ay:
Select which equation to use to find velocity, v
t
Time
sec
0
Ду
Displacement
mn
Velocity
m/s
Acceleration
m/s?
1
2
4
5
6
7
8
9
10
11
12
13
11
15

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

Utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must available hint(s)utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must pump water back into their cells to counter its loss due to osmosisactively pump water back out of their cells to counter its inflow due to osmosissynthesize membranes that are impermeable to substances that upset osmotic balanceactively pump salt back out of their cells to counter its inflow due to osmosis

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?