Programming 302

1. Which of these blocks is used to change the bounciness of a ball?

• {"func":"blockPhysicsSetRestitution","values":[{"type":"number","value":"0.2"}]}
• {"func":"blockPhysicsStart"}
• {"func":"blockPhysicsSetGeometry","values":[{"type":"choice","value":"circular"}]}
• {"func":"blockPhysicsApplyImpulse","values":[{"type":"number","value":"0"}]}

2. If you wanted to make a ball bouncier, how would you change the value of the {"func":"blockPhysicsSetRestitution","values":[{"type":"number","value":"0.5"}]} block?

• Set the value to 0.9
• Keep the value at 0.5
• Set the value to 0.3
• Set the value to 0.0

3. How can I make an Actor less bouncy?

• Decrease its restitution
• Increase its restitution
• Decrease its size
• Increase its size

4. Kate wants to program her aliens to be harder to knock over. What could she add to her alien actors?

• Kate can make her aliens actors denser by setting the density to a higher value
• Kate can make her aliens actors less dense by setting the density to a lower value
• Kate can make her aliens actors bouncier by setting the restitution to a higher value
• Kate can make her aliens actors less bouncy by setting the restitution to a lower value

5. Which code blocks can be used to check if the alien Actor has fallen off of the platform?

• {"func":"registerTrigger","values":[{"type":"wrapper","func":"valueOpLess","values":[{"type":"wrapper","func":"valueMotionYPosition"},{"type":"wrapper","func":"valueSensingSpriteProperty","values":[{"type":"choice","value":"y position"},{"type":"string","value":"sci fi platform1"}]}]}]}
• {"func":"registerTrigger","values":[{"type":"wrapper","func":"valueOpLess","values":[{"type":"wrapper","func":"valueMotionXPosition"},{"type":"wrapper","func":"valueSensingSpriteProperty","values":[{"type":"choice","value":"x position"},{"type":"string","value":"sci fi platform1"}]}]}]}
• {"func":"registerTrigger","values":[{"type":"wrapper","func":"valueOpLess","values":[{"type":"wrapper","func":"valueSensingSpriteProperty","values":[{"type":"choice","value":"y position"},{"type":"string","value":"sci fi platform1"}]},{"type":"wrapper","func":"valueMotionYPosition"}]}]}
• {"func":"registerTrigger","values":[{"type":"wrapper","func":"valueOpLess","values":[{"type":"wrapper","func":"valueSensingSpriteProperty","values":[{"type":"choice","value":"x position"},{"type":"string","value":"sci fi platform1"}]},{"type":"wrapper","func":"valueMotionXPosition"}]}]}

6. How can you make an Actor easier to knock over?

• Increase the value of its density
• Decrease the value of its density
• Increase the value of its restitution
• Decrease the value of its restitution

7. Which restitution setting would make an Actor bounciest?

• {"func":"blockPhysicsSetRestitution","values":[{"type":"number","value":"100"}]}
• {"func":"blockPhysicsSetRestitution","values":[{"type":"number","value":"10"}]}
• {"func":"blockPhysicsSetRestitution","values":[{"type":"number","value":"1"}]}
• {"func":"blockPhysicsSetRestitution","values":[{"type":"number","value":"0.1"}]}

8. Which density setting would make an Actor the least dense?

• {"func":"blockPhysicsSetDensity","values":[{"type":"number","value":".1"}]}
• {"func":"blockPhysicsSetDensity","values":[{"type":"number","value":"1"}]}
• {"func":"blockPhysicsSetDensity","values":[{"type":"number","value":"10"}]}
• {"func":"blockPhysicsSetDensity","values":[{"type":"number","value":"100"}]}

9. There are two Actors in Kate's project: a green alien and an orange alien. The green alien has a restitution of 1. The orange alien has a restitution of 10. Which Actor is bouncier?

• The orange alien
• The green alien
• Both aliens are equally bouncy
• It depends on what value gravity has been set to

10. There are two platforms in Anna's project. The first platform has a density of 1. The second platform has a density of 100. What happens if I shoot an asteroid at both platforms?

• The first platform will fall over much more easily than the second platform.
• The second platform will fall over much more easily than the first platform.
• The first platform will be much bouncier than the second platform.
• The second platform will be much bouncier than the first platform.

11. True or false: The less dense an object it is, the harder it is to knock it over.

• True
• False

12. True or false: The higher the restitution of an Actor, the bouncier it is.

• True
• False

13. True or false: The denser an object is, the bouncier it is.

• True
• False

14. True or false: An Actor's density depends on its color.

• True
• False

15. True or false: An Actor's restitution depends on its density.

• True
• False