Velocity Velocity: Speed in a given direction Formula: Velocity= Distance/ Time Units: m/s, km/hr, mph (depends on units used in the question) Practice: 1. What is the average velocity of a train that travels 100 miles per hour while traveling North? miles per hour 2. What is the average velocity of a toy car traveling 12 meters in 4 seconds while traveling left? meters per second

Freight trains can produce only relatively small accelerations and decelerations. a) What is the final velocity of a freight train that accelerates at a rate of 0.0495 m/s² for 5 min, starting with an initial velocity of 4.55 m/s? b) If the train can slow down at a rate of 0.051 m/s², how long will it take to come to a stop from this velocity? 9. Click on units for help with units. *************

Science 24: Module 4 8 Assignment Booklet 4A (1 13. What does the run between two points on a distance/time graph represent? the responding variable B. average velocity C. the time interval D. distance travelled 14. The motion of a snail, a rocket, a car, and a baseball were each graphed on the same distance/time graph. The line with the least slope likely represents the motion of the A. snail B. rocket C. car D. baseball 15. A ticker tape machine recorded the motion of a dynamics cart. The dots were uniformly spaced on the tape. What does uniform spacing indicate? A. a changing velocity B. an object slowing down C. a constant velocity D. an object that has stopped Return to page 42 of the Student Module Booklet and begin Less

4. In velocity versus time graph, what does the slope of the line between two points represents: a. The average velocity. b. The average speed. c. The average acceleration. d. The instantaneous velocity. e. The instantaneous velocity. Explain your reasoning:

1. What is the distance and direction traveled during the 0s-8s time period? 2. What is the distance and direction traveled during the 8s-24s time period? 3. How far away and in what direction from their starting position does she end up?