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

• 7
• 97% (37) 36 out of 37 people found this document helpful

This preview shows page 2 - 4 out of 7 pages.

B.
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 Loss 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.
B. .
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?
4. Draw conclusions : When there is no friction, what is the only factor that affects the final
What factors do not affect the final speed of a roller coaster?
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 . 2. Experiment : The gravitational potential energy ( U ) of a car describes its energy of position. Click Reset . Set Hill 3 to 99 cm. Select the U vs t graph, and click Play . A. What happens to potential energy as the car goes down the hill?