Studied by 9 peoplegravitational force
The ________ between two objects is always attractive, meaning it pulls the objects towards each other.
net force
In equilibrium, the ________ acting on an object is zero, and the object is either at rest or moving with a constant velocity.
laws of motion
The ________ are not absolute but are dependent on the reference frame from which they are observed.
The gravitational potential energy of an object in a uniform gravitational field can be calculated using the formula
PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object
The gravitational force between two objects can be calculated using the formula
F = G (m1m2) / r^2, where F is the gravitational force, m1 and m2 are the masses of the two objects, r is the distance between them, and G is the gravitational constant
If you weigh 180 pounds on Earth, you would weigh _______ pounds on the Moon.
30
mass
how much matter a(n) object has (measured in kg) and never changes
weight
the force of gravity on an object (measured in N)
kinetic energy
energy of motion, like inertia (measured in J)
energy
the ability to do work or cause change
potential energy
stored energy of position
Elastic Potential Energy
is the energy stored as a result of deformation of an elastic object.
higher
The ________ up the object, the greater its Gravitational Potential Energy
faster
The ________ the object is traveling, the greater its kinetic energy.
The ________ mass the object has, the greater its kinetic energy.
more
Roller coasters can't get as high as its first high point because it loses some energy due to friction with the air, known as ______.
air resistance
Gravitational Potential Energy
_____ is the energy an object possesses because of its position in a gravitational field.
What is the formula for Universal Gravitational Force
FG= GM1M2÷d1,2²
Total Energy of System =
Et = Ek + Ep
Define Gravitational Potential Energy
GPE (Ep or U) is the energy stored by doing work against the force of gravity, is given by FG Ă— d
What does the h stand for in the equation for gravitational potential energy? What is it measured in?
Height in m
What does the g stand for in the equation for gravitational potential energy? What is it measured in?
Gravitational field strength in N/kg
Note 
Flashcard (54)