physics

• a moving object always has energy in its kinetic energy
• A catapult uses a material that can be stretched to propel an object. When the object is released, the catapults' elastic potential energy store decreases and energy is transferred to the kinetic energy store of the object.
• in the equation Ep = m g h, gravitational potential energy is represented as Ep
• Nigel drops a microphone. It does not fall a t a steady velocity - it accelerates due to the force form the gravity. as the microphone falls, energy is transferring from its gravitation potential energy
• Fossil fuels are formed gradually over millions of years