Kinetic Energy Solution 3

When an automobile speeds up to four times its original speed, its kinetic energy becomes:
  1. The same
  2. Twice
  3. Thrice
  4. None above
Solution:
if the speed is now 4v instead of v, then PE = ½ m(4v)2 = 16 (½ mv2) = 16 times the original speed.


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Date of last modification: 2021