# B try the other cars does the mass of the car affect

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B. Try the other cars. Does the mass of the car affect its final speed? No, it does not . 2. Collect data : Find the final speed of a toy car in each situation. Leave the last column blank. Hill 1 Hill 2 Hill 3 Final speed Total height lost 40 cm 0 cm 0 cm 280.1 cm/s 40 cm 40 cm 30 cm 0 cm 280.1 cm/s 40 cm 60 cm 50 cm 20 cm 280.1 cm/s 40 cm 60 cm 0 cm 0 cm 343.1 cm/s 60 cm 60 cm 45 cm 0 cm 343.1 cm/s 60 cm 90 cm 75 cm 30 cm 343.1 cm/s 60 cm 3. Analyze : Look at the data carefully. Notice that it is organized into two sets of three trials.
C. Label the last column of the table Total height lost . Fill in this column by subtracting the height of hill 3 from the height of hill 1. D. What do you notice about the Total height lost in each set of trials? In each set of trials, each set had the same amount of total lost height. 4. Draw conclusions : When there is no friction, what is the only factor that affects the final speed of a roller coaster? What factors do not affect the final speed of a roller coaster? The
2019 Activity B: Energy on a roller coaster Get the Gizmo ready : Click Reset . Select the 50-g car. Check that the Coefficient of friction is 0.00. Set Hill 1 to 100 cm, and Hill 2 and 3 to 0 cm. Question: How does energy change on a moving roller coaster? 1. Observe : Turn on Show graph and select E vs t to see a graph of energy ( E ) versus time. Click Play and observe the graph as the car goes down the track. Does the total energy of the car change as it goes down the hill? No it does not.