v_i = 0 m/s
 a = -9.8 m/s²

v_i = -9.8 m/s
 a = -9.8 m/s²

v_i = -9.8 m/s
 a = 0 m/s²

d = -9.8 m
v_i = 0 m/s

September 21

September 22

September 23

September 24

spring equinox

summer solstice

winter solstice

autumn equinox

hours of daylight and hours of darkness

number of monarchs and number of milkweed

hours at school and hours at home

minutes on the school bus and minutes of homework

flavenoids

carotenoids

anthocyanins

chlorophyll

migration

mitigation

hibernation

adaptation

$$9.8 \, \text{m/s}^2$$

$$0 \, \text{m/s}^2$$

$$-9.8 \, \text{m/s}^2$$

$$9.8 \, \text{m/s}$$

Constant velocity

Constant acceleration

Increasing acceleration

Decreasing velocity

$$0 \, \text{m/s}$$

$$9.8 \, \text{m/s}$$

$$-9.8 \, \text{m/s}$$

$$19.6 \, \text{m/s}$$

It remains constant

It decreases

It increases

It becomes zero

It experiences air resistance

It has a constant speed

It accelerates at $$9.8 \, \text{m/s}^2$$

It moves upward

Friction

Air resistance

Gravity

Magnetism

Heavier objects fall faster

Lighter objects fall faster

Mass does not affect the fall

Objects do not fall in a vacuum

Terminal velocity

Initial velocity

Final velocity

Average velocity