Net Force and Roller Coaster

Roller Coaster Physics

Lesson 3 Pages 10-16

Continue to Build the Model on Pages 10-11 for experiments 3 and 4.

Multiple Choice

How does changing the height affect the speed of the train?

• The train will stop moving at higher heights
• The train will move faster at higher heights
• Changing the height does not affect the speed of the train.
• The train will move slower at higher heights

Fill in the Blanks

Drag and Drop

The ​

Placeholder

off the ground an object is, the ​

Placeholder

gravitational potential energy it has.

Drag these tiles and drop them in the correct blank above

higher

more

less

closer to

Multiple Choice

According to the law of _________, ENERGY cannot be created or destroyed.

• Conservation of Energy

• Physics

• Gravity

• Potential

Dropdown

Potential Energy is energy that is ​ ​

Select answer

Multiple Choice

Trains moving faster at the bottom of a hill will take longer to stop because they have more ___________

• Mass

• gravity

• Momentum

• friction

Open Ended

In experiment 4, you change the mass of the train by adding weight. How does this affect the speed of the train? Use the summary at the left of the page to answer the question.

Dropdown

Potential energy is directly proportional to ​

Select answer

.

Dropdown

The only forces stopping a train are:

Select answer

and air resistance.

Page 13

​

​Continue building the Model for Experiments 5-8

• Page 14

Conduct Experiment 5

Open Ended

Can a train with more momentum (and more mass) climb up to a higher point?

explain your answer.

Page 15

Conduct experiment 6

Open Ended

How does changing the slope affect the acceleration (speed) of the train? Explain your answer.

Dropdown

Conduct Experiment 7 on stability. If a track is not stable (floppy) then it gives more of its ​

Select answer

to the track and robs energy from the train - thus not having the ​

Select answer

_ to make it up the other side.

Page 16

Conduct Experiment 8

Drag and Drop

Is all energy actually conserved? ​ ​ ​

Placeholder

Drag these tiles and drop them in the correct blank above

No, because energy is not always conserved

No, some is lost to friction

Yes because energy is never lost