Ch11 A
A change in position
motion
formula for speed
s=d/t
force, N
gravity is a _______force.
a. normal b. field c. contact d. G
field
a. bumblebee b. bullfrogs c. flies d. mosquitoes
b. bullfrogs
Brahe, Kepler, Galileo
a vector quantity indicating the rate at which an object’s position changes/speed+direction
velocity
force diagram is also known as the?
free-body diagram
What is the acceleration due to gravity on the earth?
9.81 m/s2
What two elements make up water?
oxygen and hydrogen
Definition for distance and displacement
Symbol for distance and displacement
distance (length of route between two points) d
displacement (marks how far we are from starting line) delta x
which property of a moving system looks at the mass and the velocity?
*state the formula as well
momentum
Describe Newton's first law of motion
•the law that states that objects at rest remain at rest and objects in motion will remain in motion unless acted on by an unbalanced force
Why does friction occur?
What does "Hakuna Matata" mean?
No worries
Which of the following is a vector quantity?
a. speed b. pressure c. distance d. force
force
What are the three types of motion?
linear, circular, projectile
What are the three types of friction and give an example of each.
static, kinetic, rolling
What do you call a group of fish?
A school
the study of how objects move using numbers, graphs, etc.
a. kinematics b. dynamics c. mechanics d. statistics
a
In a trajectory, ________moves in the horizontal direction, and ________moves in the downward direction.
if the forces in opposite directions are balanced what will the acceleration rate and the net force be?
0
strong: holds protons and neutrons inside of a nucleus
weak: holds elementary particles inside of a proton together
What year did the Titanic sink?
(hint: between 1900-1920)
1912