question 5\na wind - up toy has no energy..\nwhen sitting still untouched\nwhen wound up\nwhen moving
question 5\na wind - up toy has no energy..\nwhen sitting still untouched\nwhen wound up\nwhen moving
Answer
Answer:
When sitting still untouched
Brief Explanation:
A wind - up toy has potential energy when wound up and kinetic energy when moving. When sitting still untouched, it has the least amount of energy in the form of just its rest - mass energy (which is negligible for the context of this question about mechanical energy), so it can be considered to have "no energy" in terms of mechanical energy relevant to its motion compared to when wound up or moving.