Study guide physical science-Chapter 3 section 1
Vocabulary
Motion
Distance
Speed
Velocity
Name:__________________
Position
Displacement
Average speed
Reference frame
Vector
Instantaneous speed
_______________________ 1. the distance and direction of an object’s final position from its
initial position
_______________________ 2. a quantity that is specified by both a size and a direction
_______________________ 3. the distance an object travels per unit of time
_______________________ 4. speed at a single instant or moment of time
_______________________ 5. length of the path an object travels
_______________________ 6. occurs when an object changes position
_______________________ 7. total distance traveled divided by the total travel time
_______________________ 8. the speed of the object and its direction of motion
_______________________ 9. a group of objects that are not moving relative to each other
_______________________ 10. the distance and direction of an object from the reference point
Calculating speed
Formulas: s = d/t
d=sxt
t = d/s
1.) Data taken from the liftoff of the space shuttle shows that in the first 10.00 seconds, the
shuttle travels a distance of 933 feet. What is the shuttle’s average speed during this time period?
2.) A mousetrap-powered car can travel 20.0 meters in 15.0 seconds. What is the speed of the
car?
3.) A really fast armadillo can cross a road at a speed of 2.000 m/s. how long will it take it to
cross a two-lane highway if the width of the road is 20.00 meters?
Graphing and interpreting distance vs. time graphs.
a) How far is Sian from her house at 09 30? ____________ km
b) The library is 20 km from her house. At what time did she arrive at the library? ______
c) How long did Sian spend at the library? ____________
d) At what time did Sian arrive back at her house?____________
Determining distance and displacement by drawing vectors.
A whale swims due east for a distance of 6.9 km, turns around and goes due west for 1.8 km,
and finally turns around again and heads 3.7 km due east.
What is the total distance traveled by the whale? ______________________
What is the displacement of the whale? ____________________________
Explain with a diagram: