Ruth drives 25 mph for 1 hour, then she stops for 30 minutes.  Next, she drives further from home at 40 mph for 2 hours, stops for 30 minutes, then turns around and heads back home at 50 mph.  Use the distance time graph. 1.  Sketch a graph of Ruth's distance from her home 2.  Skecth a graph of Ruth's speed over time.

A motorist drove from Bristol to Bath at an average speed of 40 mph and then from Bath to Chippenham at an average spped of 30 mph. What was her average speed for the whole journey? A. 35 mph B. 36 mph C. 70 mph D. need more information

A car is going 29.0 m/s when it begins to slow and comes to a stop in 100 meters. What was the acceleration of the car? a. -3.05 m/s² -4.21 m/s² O b. C. d. -5.01 m/s² *3.05 m/s² e. 4.21 m/s²

7. An elevator in a high-rise building goes up and down at the same speed. Starting at the ground floor, Rafael and Monica ride up five floors, a vertical rise of 20 m. The elevator stops for 10 s as Monica gets off. Rafael then goes back down two floors. Rafael's entire trip takes 24 s. Take the origin to be at the ground floor. a. Sketch the position vs time graph b. Sketch the velocity vs time graph 8. This is the velocity-versus-time graph for an object moving v, (m/s) along the x-axis. a. During which segment(s) is the velocity constant? b. During which segment(s) is the object speeding up? c. During which segment(s) is the object slowing 3- A 2- 1- B (s) 10 down? 3 4 5 6 8 -1 d. During which segment(s) is the object standing still? C -2- D e. During which segment(s) is the object moving to the right (in the positive x-direction)? -3-