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New answers tagged mass

1 vote

Assuming the photon has a moving mass, why current quantum mechanics is unable to prove or deny it?

This question has been beat to death here, a quick search should give you more details. So, in a nutshell: Non-relativistic quantum mechanics doesn't describe massless particles well. In a ...
• 824

Force of an accelerating ball?

But if I were to drop the same ball from a greater height, why would it hit the ground harder, with greater force? Yes, it's right. Because when the ball falls from a greater height it has more ...

Force of an accelerating ball?

At the exact moment of impact, is the ball still in free-fall? Is there not a change in momentum due to something other than gravity during the impact? The velocity changes over some (probably very ...
1 vote

Force of an accelerating ball?

Newtons second law actually states that force on a body is the "rate of change of momentum". So if a ball is dropped from a greater height, it has more velocity as compared to it being ...
Accepted

Do electrons have inertia?

Inertia is the resistance of any physical object to a change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects ...
• 221k
1 vote

Do electrons have inertia?

Despite quantum effects an electron without external forces will act as any other macroscopic object without external forces. In particular it will not accelerate by itself and it has constant inertia....