What is the law that states that for every action, there is an equal but opposite reaction?
100
Force = mass times acceleration
What is the equation that goes along with Newton's second law of motion: a net force acting on an object causes the object to accelerate in the direction of the force?
100
projectile
What is an object thrown into the air called?
100
moon
What is our closest natural satellite?
100
newtons third law of motion
What is the action-reaction law?
200
momentum
What is the amount of property of a moving object has because of its mass and velocity?
200
speed , size, shape
There are 4 things that air resistance depends on. One of them is density. What are the 3 other things that the amount of air resistance depends on?
200
Horizontal motion
What is the motion that remains constant and is parallel to the earth?
200
using a cannon
What was Newton's Idea to launch satellites into outer space?
200
rocket propulsion
What is an example of Newton's Third Law of Motion that we have talked about that involves launching something?
300
centripetal force
What is a force that causes circular motion?
300
terminal velocity
What is it called when forces are balanced on a falling object and it has reached the highest velocity?
300
weightless
What is the effect on weight when an object is in a free fall?
300
Spoutnik
What was Russia's first artifical satellite called?
300
mass times velocity
What is the calculation of momentum?
400
air resistance
What is a force that opposes the motion of a falling object near earth's surface?
400
9.8 m/s2
What is the acceleration rate of an object when the ONLY FORCE ACTING ON IT IS GRAVITY?
400
curved paths
What is the type of path a projectile follows when thrown and gravity acts on it?
400
artificial satellite
What is a human made device that orbits Earth for a specific purpose?
400
0
What is the momentum of a ball that is 12 kg that is left on the playground and not moving?
500
terminal velocity
What is achieved when acceleration due to gravity is balanced by air resistance?
500
400 N
What is the amount of force needed when a weightlifter raises a 200 kg barbell with an acceleration of 2 m/s?
500
centripetal force
What type of force helps an ice skater spin quickly in a circle?
500
It gets pulled into the atmosphere and burns up
What happens to an artifical sattelite after it loses energy?
500
the mass is greater
Why does a full size fire truck have more momentum than a toy firetruck?