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What is the term for the study of motion without considering its causes?
kinematics
True or False: Position is relative, meaning each individual person's position is based off a stationary object to compare their motion with.
True
True or False: The center of the earth is used as a frame of reference for our motion in the universe.
True
Galileo discovered that observers moving at a constant ________________ and ________________ relative to each other describe motion in the same way.
speed and direction
Describe an internal movement in our bodies which should be constant.
Heartbeat or breathing.
What is a metric unit which describes distance?
meter, millimeter, kilometer (anything with the base of meter!)
What is a US Customary unit which describes distance?
miles, inches, feet, yards
What does this symbol Δ stand for?
change in or difference in
What does dΔ stand for?
displacement
Scalar is a measurement without ____________.
direction
________________ is a measurement including magnitude and direction
Vector
A cyclist rides 3 km west and then turns around and rides 2 km east. What is her total distance?
5 km
A cyclist rides 3 km west and then turns around and rides 2 km east. What is her displacement??
1 km West
Which of the following is true about displacement if you start and end in the same location: a. The total distance is smaller than the displacement. b. The displacement is 10 km. c. The displacement is 0 km.
c. The displacement is 0 km.
A ship sails 6 km East and then 8 km North. Find the ship’s distance from its starting point.
14 km
A ship sails 6 km East and then 8 km North. Find the ship’s displacement. (Hint: a^2 + b^2 = c^2)
10 km North East
