state the factor of knetic energy
Answers
Answer:
E = (1/2) * m * v ^2 , is Half Of (MASS Times SPEED Squared)
Two factors that influence K.E: Speed and Mass.
Notice in the formula the Speed factor. It is squared. This means that, if you INCREASE twice the mass, you will achieve TWICE the Energy. If you INCREASE twice the Speed, you will achive FOUR TIMES as much Energy. Speed Increments influences the Energy Increments twice as much as Mass Increments would. Which means that it’s more efficient to add more “bang” rather than bigger bullets.
BUT:
In mechanics, the energy that a projectile has, is not the only deciding factor in its effectiveness. Consider the Impulse of a projectile: P= m * v. There is this law called “Conservation of Impulse (momentum)” which states that in a Closed System, the Total Momentum (of all “part-icipants”) is a Constant. That means that for two moments of your system “projectile-target” in [Before-Hit; After-Hit] share of time, DOESN’T CHANGE. A Large target would need a larger projectile to be moved if it’s required. You might want to have “stopping power”, not just energy. A large bullet would “displace” a lot of matter in its way, and pushing through will impart all of its energy (creating a hurtful mess behind it).
Think of it this way:
Higher Speed than Mass => Piercing power.
Higher Mass than Speed => Stopping power.
Explanation:
Answer:
K.E. = 1/2 * M * V²
i) K.E. is directly proportional to mass
K.E. ∝ m
ii) K.E. is directly proportional to square of the velocity
K.E. ∝ v²
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