Speed vs. Velocity
Newton's Laws of Motion
Newtonian Gravitation
Free Body Diagrams
Calculate This!
200
What is the difference between speed and velocity?
Speed: distance traveled per unit of time
Velocity: speed with a direction.
200
Explain Newton's first law of motion.
Objects in motion or at rest will say there unless acted on by unbalanced force
200
The constant in Newton’s gravitational equation, represented by 'G,' is known as this."
Gravitational constant
(6.67x10^-11)
200
The force that acts perpendicular to the surface in a free-body diagram.
Normal force
200
If a 10 N force accelerates an object at 2 m/s², this is the mass (kg) of the object.
5 kg
400
This vector quantity describes both the speed and direction of an object's motion.
Velocity
400
Finish the Law:
An object at rest stays at rest and an object in motion stays in motion unless acted upon by ...
An unbalanced force
400
The formula for calculating gravitational force between two objects includes these two factors multiplied together.
Mass
400
This force opposes the motion of an object and is often represented by an arrow pointing opposite to the direction of motion in a free-body diagram.
Friction
400
Calculate the gravitational force between two objects with masses of 5kg and 10 kg separated by a distance of 2m. 
F = 8.34*10-10 N
600
Speed is a scalar quantity, but velocity is this type of quantity.
Vector
600
What is the formula for calculating the force exerted by an object? Hint: Newton's 2nd Law
Force = Mass × Acceleration (F = ma)
600
What does "d" or "r" represent?
Distance between the two objects
600
In a free-body diagram, the gravitational force acting on an object is always drawn pointing in this direction.
Downward
600
A car travels 120 km east in 2 hours. What is its speed and velocity?
Speed = 60km/h
Velocity = 60km/h East
800
When an object moves at a same speed in a straight line, its velocity is said to be ...
Constant
800
According to Newton’s Second Law, this increases when the force applied to an object increases.
Acceleration
800
When do you use this equation?
If the objects have the same mass
800
This type of force is represented by an arrow pointing outward from the object in a free-body diagram, typically when a rope or string is attached.
Tension
800
Two objects with the same mass (m) are separated by a distance of 3 meters. The gravitational force between them is 1.0 N. What is the mass of each object?
4.5 x 1010
1000
If you run around a track and return to your starting point, your displacement is zero, meaning your average velocity iswhat?
0
1000
Finish the law:
For every action, there is...
an equal and opposite reaction
1000
Finish the fact:
The farther apart the two objects are...
The weaker the gravitational force
1000
These arrows in free body diagrams indicate both the direction and magnitude of forces acting on an object.
Vectors
1000
A runner travels 200 meters north in 25 seconds, giving them what velocity in meters per second.
8 m/s N