Question

Waht is the meaning of "kinetic" in kinetic energy ?

How much kinetic energy will be produce if a 5 mile asteroid will hit the earth at the speed of 60,000 km per hour ?

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Answer 1

In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

Answer 2

Earth asteroid with a speed of 19.16 ± 0.15 kilometres per second (60,000[5]–69,000 km/h or 40,000[5]–42,900 mph).

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