christeinberg1
01.04.2020 •
Physics
How does momentum of a body change if its kinetic enerygy is doubled
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Ответ:
Explanation:
Momentum is directly proportional to velocity. If momentum of an object is doubled , but itsmass does not increase (so velocity remains below the speed of light) then its velocity isdoubled. If the velocity is doubled, then the kinetic energy increases by four times.
Ответ:
They are one step out of sync
1 step ⇒ ≈0.5 s
sound reaches rear with 0.5s delay
sound travels in 0.5 seconds = 343 m/s * 0.5s = 171.5m