the upward force exerted on an object falling through air is this
what is air resistance?
The statement to every reaction there is an equal and opposite reaction is taught in which one of newton's laws?
Newton's 3rd law of motion
when a rocket lifts off, its upward momentum is matched by the downward momentum of
gases expelled from the rocket
When an object moves in a circular path, it accelerates toward the center of the circle as a result of this
what is centripetal force?
A feather will fall through the air more slowly than a brick because of this force.
what is gravity?
the product of mass and velocity gives us a quantity known as this.
what is momentum?
The relationship among mass, force and acceleration is explained by this law.
Newtons's second law of motion
in the absence of air, a penny and a feather dropped from the same height would do what
fall at the same rate
when an object moves in a circle, this acts to accelerate the object toward the center of the circle
centripetal acceleration
when traveling at 50 km./hour collides head on with something solid, the car stops in this amount of time.
An object that is in free fall would be approximately which weight
0 kg.
When 2 objects collide their momentum after the collision is explained by this law
the conservation of momentum
when a car travels around a curve in the road, this helps to keep the car traveling on the road.
centripetal force
2 surfaces that are not moving past each other are experiencing this type of friction
the greatest velocity reached by an object is considered to be its
terminal velocity
The amount of gravitational force between 2 objects depends on these 2 things.
mass and distance between them
Force is reported in his unit
Newtons
Astronauts aboard the international space station measure as this because they are in free fall.
weightless
the gravitational force exerted on an object is known as this.
weight
an object at terminal velocity has an acceleration of this if they are in earths atmosphere
this type of friction opposes motion of 2 surfaces that are sliding past each other
what is sliding friction
a force is described as these 2 things
push or pull
an object that is not moving is experiencing this type of force
balanced force
a moving object is experiencing this type of force
unbalanced force
what activity was I doing in 6th grade when I learned how friction feels between skin and asphalt
roller blading