Presentation on theme: " Write the following in scientific notation 6500000 0.00305 0.000000089 504000 Write the following in standard notation 8.3 x 10 -5 9.09 x 10 4 7.08."— Presentation transcript:
Write the following in scientific notation Write the following in standard notation 8.3 x x x x 10 7 Convert the following 36 seconds into milliseconds 0.06 kilowatts into watts 19 deciamps into amps
Used to describe motion in reference to something. A fixed point
Distance is the total path taken by an object Displacement measures the distance between starting and ending points
Speed describes how fast an object moves (called a scalar quantity) Velocity describes speed and direction (called a vector quantity)
Formula: distance/time V=d/t Units? ____
Find the velocity in meters per second of a swimmer who swims 110 m toward the shore in 72 seconds. Find the velocity in meters per second of a baseball thrown 38 m from third base to first base in 1.7 sec. Calculate the distance in meters that a cyclist would travel in 5.00 hours at an average velocity of 12.0 km/h to the southwest.
A car is traveling east for a distance of 890 meters. It will take the car 37 seconds to travel the distance. What is the cars velocity? A line of dominos is set up on a table. You push the first domino to make the rest fall. The dominos fall at a velocity of 0.2 m/s down the table. It takes 15 seconds for the last domino to fall. How long was the domino line? If you run with an average velocity of 2 m/s toward a goal, a total distance of 400 m, how long would it take you?
Velocities can be combined to describe the resultant velocity. Ex. You are riding a bus that is traveling 15 m/s east. You stand up and walk toward the back of the bus (now walking east) at 1 m/s. Are you still traveling at the same speed? To find the resulting velocity, just add the velocities together.
The speed at a given point. Car speedometers measure the speed at a given point.
X- axis: Y- axis: Type of graph:
Data for a runner: When is the runner going the fastest? When is the runner moving slower? When is the runner standing still? Time (s)Position (m)
The slope of a distance vs. time graph equals speed. A slope can be determined by taking the change in the y variable and dividing it by the change in the x variable. Slope = ∆y/ ∆ x (rise/run)
What is the slope of the line? What is the speed of the bug between 2 and 4 seconds? What is the speed at 8 seconds? What might the speed be at 11 seconds?