How fast would a 2-kilogram object need to move to have the same kinetic

energy as a 4-kilogram object moving at 8 meters per second?

Question

Abbey Schmitt

1 July, 21:09

+3

Answers (1)

Know the Answer?

Collin Estes · Answer 1

11.3 m/s

Explanation:

KE₁ = KE₂

½m₁v₁² = ½m₂v₂²

½ (2 kg) v² = ½ (4 kg) (8 m/s) ²

v ≈ 11.3 m/s

How fast would a 2-kilogram object need to move to have the same kineticenergy as a 4-kilogram object moving at 8 meters per second?