Newton's 1st
Newton's 2nd
Free Fall
Mass vs. Weight
Units
100
Newton's 1st Law
"an object at rest will stay at rest and an object in motion will continue in motion with the same velocity unless acted on by an outside force"
100
Units of acceleration.
m/s2
100
The only cause of acceleration when an object is in free fall.
Gravity
100
True or false: Mass and weight are the same thing.
False
100
Units of distance
Meters
200
An action that has the ability to change motion.
a force
200
Newton's 2nd Law
The amount of acceleration of an object depends on both the net force that is applied to it and its mass
200
The reason why acceleration due to gravity is considered a negative value.
It is acting in the negative (downward) direction
200
This remains constant, regardless of its location in the universe.
Mass
200
Units of time
Seconds
300
If there is no change in an object's motion, then there is no _____ acting on that object.
net force
300
As the mass of an object increases, the force needed to accelerate it [ increases / decreases ].
Increases
300
The difference between the velocities calculated in each equation.
V-average is the average velocity over an entire fall, while the other velocity is at a specific time.
300
An object's weight depends on these 2 things.
Mass and gravity
300
Units of mass
Kilograms
400
The property of an object that resists changes in motion.
inertia
400
The cause of a change in acceleration.
Net force
400
The equation used to answer the following problem: A ball is dropped from rest from the highest floor of Saint Hubert's. What is its velocity when it hits the ground 2.74 seconds after being dropped?
velocity equals gravity multiplied by time
v = g*t
400
Calculate the weight of a 15-kilogram object on Earth.
-147 N
400
Units of force
Newtons
500
The reason why it is more difficult to change the motion of a semi-truck than a desk.
The semi-truck has a greater inertia than the desk.
500
According to Newton's 2nd Law, when the net force increases this also increases.
Acceleration
500
The average velocity of a free falling object that is dropped from rest and has a final velocity of -33.74 m/s.
-16.87 m/s
500
Earth's gravity is greater than the moon's gravity. Because of this, will an object have a greater weight on the earth or on the moon?
Earth because it has a greater gravity (and so, its objects will have a greater weight)
500
Units of weight
Newtons