Some students were investigating the speed of a toy car that they built. They performed two trials and recorded their data on the table below. Toy-Car Trials Trial 1 Trial 2 Time (s) Distance (m) Time (s) Distance (m) 4.0 5.6 5.0 7.0 What was the average speed of the toy car during the two trials to the nearest tenth of a m/s? m/s

A runner maintains constant acceleration from rest, reaching 8.1 m/s after running 99 m. How much time did it take to reach that speed? t = **** Record your numerical answer below, assuming three significant figures.

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?

Learning Goal: A car is traveling with constant velocity along a highway. The driver notices he is late for work, so he stomps down on the gas pedal and the car begins to speed up. The car has just achieved double its initial velocity when the driver spots a police officer behind him and applies the brakes. The car then slows down, coming to rest at a stoplight ahead. Draw a complete motion diagram for this situation. PROBLEM-SOLVING STRATEGY 1.1 Motion diagrams MODEL: Determine whether it is appropriate to model the moving object as a particle. Make simplifying assumptions when interpreting the problem statement. VISUALIZE: A complete motion diagram consists of: The position of the object in each frame of the video, shown as a dot. Use five or six dots to make the motion clear but without overcrowding the picture. More complex motions may need more dots. ● The average velocity vectors, found by connecting each dot in the motion diagram to the next with a vector arrow. There is one…