Vocabulary
A physical measurement that contains only magnitude (number) and does not contain directional information
Scalar quantity
A man and woman are driving in a car on the highway. They are holding hands. They notice a cow in the field grazing as they pass by. Relative to the man, which is in motion: the woman or the cow?
the cow is in motion relative to the man
Which measurement requires a direction:
Velocity
What is the first step to determine how fast something is moving during a certain period of time?
list what you know
The change in an object's velocity over time
acceleration
A man jogs around the block, returning to the gym. It took him 14 minutes to complete the job, which covered a distance of 1.2 miles. What is his total displacement?
zero miles
What as the speed in miles per hour of a car that made a 40 mile trip in 30 minutes? What would be your second step to solving?
check to see if conversions are needed and complete the conversions
What is the third step to determining how fast something is moving during a certain amount of time?
Write the equation
The distance an object travels plus the direction from the starting point
Displacement
The man and woman are driving in a car past a cow grazing in the pasture, and they are holding hands. Relative to the woman, what is not in motion: the man or the cow?
The man is not in motion relative to the woman
Which of the following quantities could represent a velocity?
a) 10 mi/h
b) 74 mi/min west
c) 100 km/h and slowing
d) 25 m east
What is the fourth step for determining how fast something is traveling during a certain period of time?
Substitute and solve
A point against which motion is measured
Reference point
Which is an example of zero acceleration?
constant speed going down the middle of the slope
What is the second step for determining how fast something is traveling for a certain period of time?
decide if you need to make conversions, if necessary make them
Physical measurement that contains not magnitude (number) and directional information
Vector quantity
How many total steps are there?
4