.
Halved
Unchanged
Doubled
Quadrupled.
Dependent on its acceleration.
Continue to move in the same way forever, no matter what happens.
Continue to move in the same way until it is acted upon by a force.
Eventually slow down and come to a stop.
Continue to move in a straight line forever if it is in space, but fall to the ground if it is on Earth.
Its rocket engines push against the launch pad, propelling the shuttle upwards.
By converting mass-energy to kinetic energy
By achieving lift from its wings in the same way that airplanes do
Hot gas shoots out from the rocket and, by conservation of momentum, the shuttle moves in the opposite direction.
The hot rocket exhaust expands the air beneath the shuttle, propelling it forward.
Newton's first law of motion.
Newton's second law of motion.
Newton's third law of motion.
The universal law of gravitation.
Conservation of momentum.
Mass and velocity
Mass, velocity, and radius
Force and radius
Force, velocity, and radius
Momentum and angular velocity
Mass can be turned into energy, but energy cannot be turned back into mass.
It takes a large amount of mass to produce a small amount of energy.
A small amount of mass can be turned into a large amount of energy.
You can make mass into energy if you can accelerate the mass to the speed of light.
One kilogram of mass represents 1 joule of energy.
An object always has the same amount of energy.
Energy can change between many different forms, such as potential, kinetic, and thermal, but it is ultimately destroyed.
The total quantity of energy in the universe never changes.
The fact that you can fuse hydrogen into helium to produce energy means that helium can be turned into hydrogen to produce energy.
It is not really possible for an object to gain or lose potential energy, because energy cannot be destroyed.
It is produced from the radiative energy of the Sun on your skin.
It comes from the foods you eat.
It comes from the water you drink.
It is in the air that you breathe.
It is created during the time that you rest or sleep.
Directly proportional to the square of the distance between objects.
Inversely proportional to the square of the distance between objects.
Directly proportional to the distance between objects.
Inversely proportional to the distance between objects.
Not dependent on the distance between objects.
Not change at all.
Increase by a factor of 2.
Decrease by a factor of 2.
Increase by a factor of 4.
Decrease by a factor of 4.
Ellipses only.
Ellipses and spirals.
Ellipses, parabolas, and hyperbolas.
Ellipses, spirals, and parabolas.
Spirals, circles, and squares.
First quarter
New moon
Full moon
Both new and full moons
Both first and third quarters