Energy Physics
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Answers
Answer:
1. kinetic energy and potential energy
2. The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius. Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is equal to approximately 4.2 joules.
3. The two main factors that affect kinetic energy are mass and speed.
4. You input potential (stored) energy into the rubber band system when you stretched the rubber band back. Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.
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Answer:
Kinetic and potential energy
Calorie and Joule are the units of energy. The relation between calorie and joule is proportionate. This implies any change in Calorie will change its equivalent value in Joules
The total kinetic energy of an object depends on several factors, such as the amount of work done on an object and its acceleration after a moment of inertia from external forces. The most important factors that determine kinetic energy are the motion (measured as velocity) and the mass of the object in question.
A rubber band is an elastic material in nature. When stretched, it changes its shape and when the applied force is removed, it regains its original shape. That is why a rubber band changes its shape even though it is a solid. Also, if excessive force is applied then the rubber band would break.