Motion
What does a flat line mean on a distance-time graph?
The object...
is not moving or has stopped moving
Balanced forces are e_____ and opposite, so the object does _____ move or keeps moving at the same speed and direction.
equal
NOT
When an object moves, its energy shifts between p_________ energy and k_________ energy.
potential
kinetic
A force is a p_____ or p_____ that can change an object's motion.
push or pull
C________ Speed: Moving the same distance for every unit of time.
constant
What does a straight diagonal line mean on a distance-time graph?
The object is going at a...
constant speed
Unbalanced forces are not equal, so the object starts m________, stops, s________ up, s______ down, or changes direction.
moving
speeds
slows
At the top of a hill, an object has maximum _________ energy (highest point).
potential
1. Magnetic Force is a push or pull caused by m________ or magnetic fields.
2. Gravity is the force of a___________ between two masses.
1. magnets
2. attraction
A book is sitting still on a desk. What kind of forces are acting on it? balanced or unbalanced?
balanced
What does a steeper line mean on a distance–time graph?
The object is going...
faster
How does gravity change with mass and distance.
1. The m_____ mass an object has, the s_________ the gravitational pull.
2. The f________ apart objects get, the w________ the gravitational pull.
1. more, stronger
2. farther, weaker
At the bottom of a hill, an object has the maximum ________ energy.
Velocity: The speed of an object in a specific d_________.
direction
You kick a soccer ball and it starts moving. What kind of force caused this? balanced or unbalanced?
unbalanced
What does a curved line mean on a distance-time graph?
1. An upward curve means the object is....
2. A downward curve means the object is...
1. speeding up
2. slowing down
Contact forces only happen when two things t_______ each other. Types of contact forces are f_________ and applied force.
touch
friction
Potential Energy is s________ energy due to position. The h________ an object is, the more PE it has.
stored
higher
Acceleration: A change in s_______ or d________ of motion.
speed
direction
Gravitational Potential Energy: Stored energy an object has when it is lifted above the g________. The h_______ the object is, the more GPE is has.
ground
higher
What is the formula for finding the speed of an object?
speed =
distance divided by time
Types of non-contact forces are g________, electricity, and m____________.
gravity
magnetism
Kinetic Energy is energy of m_______. The f________ an object moves, the more KE it has.
motion
faster
Law of Conservation of Energy states that energy cannot be c________ nor d__________; it only changes form.
created
destroyed
A car is using cruise control and stays at the same speed. The forces on it are: balanced or unbalanced?
balanced