Mrs. Larm

 Motion is when its distance from another stationary object is changing  Using a reference point  Describing distance  Measurement are in ____________________.

 Formula is ______________________  Constant speed: same speed  Average speed: changing speeds  total distance / total time

 Velocity is speed and direction  Examples

 Graphs (x,y)  Slope: y ₂ - y₁/ x₂ - x₁  Slope intercept form: y = mx + b  m= slope  b = y intercept  x = linear line  x ² = U shaped curved line (parabola)

 Why do you need a reference point to know if an object is moving?  What is the difference between an object’s speed and an object’s velocity?  The bamboo plant grows 15 cm in 4 hours. At what average speed does the plant grow

Times (s)Baby Sarah distance (m) Baby Scott distance (m) What is each baby’s speed?

 Distance = speed x time

 Acceleration: increasing speed, decreasing speed, or changing direction  Calculating acceleration:  Acceleration= final velocity – initial velocity/ time  Time is squared m/s ²  An eagle accelerated from 15m/s to 22m/s in 4 seconds. What is the eagles average acceleration?

 Linear means  Example  Nonlinear means  Example

 Unbalanced force:  acting forces are unequal and will cause the object to move.  Balanced forces:  All forces are equal and the object will not change its motion or nonmotion

 That an object at rest will remain at rest and an object that is moving at a constant velocity will continue moving unless acted upon by an unbalanced force.  Inertia: is the tendency of an object to resist change in motion.  Mass: is the amount of matter in an object.

 The net force on an object is equal to the product of its acceleration and its mass  Force( newtons) = mass x acceleration  Acceleration = force / mass

 States that if one object exerts a force on another object, then the second object exerts a force of equal magnitude in the opposite direction on the first object

 Friction acts in the opposite direction of motion  Two factors:  Type of surface  How hard the surfaces are push together (weight)

 Momentum = mass x velocity

 Two moving objects: transfer of speed from the last object to the first object  One moving object: transfer of speed from a moving object to a stopped object which causes it to move a rate of the moving object  Two connected object: share the speed