Two balls are dropped (with zero initial speed) from a height h. show answer No Attempt If ball A has twice the mass of ball B, what can be said about the momentum of each just before they hit the ground? Ignore air resistance.

Explanation:

Let the mass of ball B is m so that the mass of ball A is 2m.

initial velocity of both the balls = 0

Let both the balls falls from the height h.

Use third equation of motion,

v² = u² + 2gh

so, the velocity with which the balls hit the ground is

So, both the balls hit the ground with the same speed.

momentum, p = mass x velocity

As the velocity is same but the mass of ball A is 2 times the mass of ball B, so the momentum of ball A is twice the momentum of ball A.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.