Measuring Motion
What is motion
an object's change in position relative to a reference point
What is force
a push or a pull
What is gravity?
a force of attraction between object that is due to their masses
True/False: Inertia is directly related to mass
True
What is free fall?
the motion of a body when only the force of gravity is acting on the body
What is velocity
The speed of an object in a particular direction
newtons
the SI for force
what is weight?
a measure of the gravitational force exerted on an object.
What are the three ways you can cause acceleration?
increase in speed, decrease in speed, change direction
What is terminal velocity?
the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
what is acceleration
The rate at which velocity changes over time
What is net force
the combination of all of the force acting on an object
What is mass?
how much matter is in an object.
Ted and Molly hold ends of a rope and stand facing each other. They pull the rope toward themselves with equal force. What will happen to the rope? A. The rope will move toward Ted. B. The rope will move toward Molly. C. The rope will not move at all. D. The rope will sag.
C. The rope will not move at all
What does orbit mean
An object is in orbit (is orbiting) when it is going around another object in space.
What is speed
the Distance traveled divided by the time interval during which the motion occurred.
What is balanced force
equal and opposite forces on an object. no acceleration
what is the SI unit for weight
Newtons
What are the 4 fundamental forces?
Gravity, Strong and weak nuclear, electromagnetic
What are/is the unit(s) for the universal gravitational constant?
Nm^2/kg^2
how do you determine average speed
total distance divided by total time
What is a unbalanced force
A force that is greater force than the object
What is mass measured in when talking about Forces
kilograms
Draw the Force vectors for a person attempted to walk across the floor
4 forces: Fn pushing up, Fg pulling down, Ff opposite to pushing motion, Fp person pushes on floor. The foot does not accelerate, no net forces allowing for the person to 'anchor' the foot and go forward
What Is Projectile Motion?
the curved path that an object follows when thrown, launched,