What Situation is This?

Ep - W = Ek

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ek - W = 0

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ek_before + W = Ek_after

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ek_before -W = Ek_after

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
0 + W = PEel

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ep_before = Ek + Ep_after

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ek = PEel

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
0 + W = Ep

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ek = Ep

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
0 + W = Ek

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.
Ep = Ek

Which situation does this equation solve for?
1. An object is dropped. There is air friction.
2. An moving object is stopped.
3. An object speeds up.
4. An object slows down.
5. A spring is compressed.
6. A dropped object part way down.
7. A moving object is stopped by a spring.
8. An object is lifted up.
9. An object is thrown up into the air.
10. A force causes an object to move.
11. An object is dropped.