Newton
Newton's First Law is the Law of _______
Inertia
Friction is a force that moves....
opposite
Independent Variable (IV) is the variable that is ______
changed
different
The density of water is
1 g/cm3
Speed =
distance over time
Unbalanced forces can _____________ an object's motion
speed up
slow down
change direction
Velocity is
speed + direction
What does control variable (CV) mean?
stays the same
The second step of the scientific method
state a hypothesis
Acceleration means....
speeding up
getting faster
Every action has an ______________________.
equal and opposite reaction
Gravity is a force that _________ downward.
pulls
Do plants grow taller if you give them more water?
What is the IV?
amount of water
The density of oil is....
0.9 gm/cm3
Constant speed means...
staying the same
zero acceleration
Find the force of a 200 kg cart traveling at 10 km/h
f = ma
f= 200 x 10
f = 2000N
A force is a ______________
push or pull
The dependent variable of the Oreo Lab
dissolve time
Results can be shown with
graphs
Find the speed of a car traveling 250 km in 5 hours
50 km/h
Inertia means....
objects at rest stay at rest
objects in motion stay in motion
unless acted upon by another force
The type of force generated by pulling someone's hair
tension
IV, DV, and CV for the boat contest.
IV - design of the boat
DV - weight of the clay
CV- foil size (10cm x 10cm)
Find the density of a boat with 5,000,000 g of mass
and 10,000,000 cubic centimeters of volumes
0.5 g/cm3
A cheetah ran for 1 minute at 30 m/s. How far did it run?
d= s x t
d = 30 m/s x 1 min
d= 30 m/s x 60 s
d = 1800m