Two cannonballs are dropped from a second-floor physics lab at height h above the ground. Ball B has four times the mass of ball

Question

3 years ago

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Two cannonballs are dropped from a second-floor physics lab at height h above the ground. Ball B has four times the mass of ball

A. When the balls pass the bottom of a first-floor window at height above the ground, the relation between their kinetic energies, KA and KB, is

Physics

1 answer:

denpristay [2] · Answer 1 · 2022-05-18T12:33:24+03:00

Answer:

1:4

Explanation:

The formula for calculating kinetic energy is:

$KE=\dfrac{1}{2}mv^2$

If the mass is multiplied by 4, then, the kinetic energy must be increased by 4 as well. Since they will be travelling at the same speed when they are at the same point, the relation between KA and KB must be 1:4 or 1/4. Hope this helps!