Is the following sentence true or false kinetic energy is related to an objects height?

Answer 1

Only in a particular way. Kinetic energy is given by the formula 1/2 X mass of object X Velocity of object X Velocity of object. So if, say, a car of mass 1000 kg was travelling along a level road with a velocity of 10 metres per second, its kinetic energy would be 1/2 x 1000 x 10 x 10 or 50000 Joules If the car was travelling along a different road, higher up a mountain, say, doing the same speed, then the kinetic energy would be the same. So in this case the kinetic energy would be unaffected by height. HOWEVER... If the car fell from a cliff, then the height of the cliff wouldmatter. A short drop would mean that when it hit the ground the car's velocity would be small, and so its kinetic enery would be small. From a high cliff it would fall more distance, and so the car would have more time to acellerate to a greater speed (as gravity pulled it down) so that when it hit the ground it would be travelling quickly and hence its kinetic energy would be high. Height affects Potential Energy - the greater the height the greater the energy. If the car is high up, the large amount of potential energy is converted into a large amount of kinetic energy as the car falls. On impact the kinetic energy turns into sound (the crash) and heat.

Answer 2

Kinetic energy of an object = 1/2 (mass) x (speed)2.

The object's height has no direct effect on its kinetic energy, and no effect at all

unless the object's speed somehow depends on its height.

Answer 3

Kinetic energy is energy in motion. Gravity pull on the object putting it in motion, the higher up an object is the harder it will fall due to gravity. Kinetic energy= energy in motion Height=more energy.

Answer 4

No. Kinetic energy is related to an object's movement. The formula is: KE = 0.5mv2.

Answer 5

No. Kinetic energy is directly related to an object mass and velocity. Potential energy is related to an objects height and mass.

Answer 6

no

Answer 7

True