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Stage 1
Answer 4 questions correctly in a row.
Two boats are moving across a lake. The kinetic energy of each boat depends on the boat's mass and speed.
| Boat | Mass (kg) | Speed ( dm/s ) | Kinetic energy (J) |
| kayak | 26 | 10 | 13 |
| canoe | 26 | 20 | 52 |
Compare the two boats.
The kayak's mass is the canoe's mass.
1/4
1/2
equal to
2 times
4 times
The kayak's speed is the canoe's speed.
1/4
1/2
equal to
2 times
4 times
The kayak's kinetic energy is the canoe's kinetic energy.
1/4
1/2
equal to
2 times
4 times
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