physics: energy transfers
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physics: energy transfers - Leaderboard
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| 🇬🇧 | 🇬🇧 |
| What is the energy transfer of an object projected upwards? | Before the ball is thrown upwards, the ball is a store of chemical energy. when the ball is thrown, the chemical energy is converted into kinetic energy as the ball begins to move upwards. As the height of the ball increases the kinetic energy is converted into gravitational energy. |
| What is the energy transfer of a moving object hitting an obstacle? | When an object such as a car is moving, the chemical energy of the fuel is converted to kinetic energy. if the object hits an obstacle, such as a car hitting a wall, the speed of the car will decelerate, so the kinetic energy will decrease. In this scenario, the kinetic energy store of the moving object is converted to thermal energy and sound between the car and the wall. |
| What is the energy transfers of a vehicle being accelerated by a constant force? | When the vehicle is stationary, it stores chemical energy in the fuel. When the vehicle speeds up, or accelerates, the chemical energy is converted into kinetic energy |
| What is the energy transfers of a vehicle slowing down? | When the vehicle is moving, it stores kinetic energy. As it slows down (decelerates), the kinetic energy is converted to the thermal energy, and sound between the tires and the road. |
| What is the energy transfers of boiling water in a kettle? | When an electric kettle is used to heat water, it uses electricity to increase the temperature of the heating element. so the electrical energy is converted to the thermal energy store of the water |