Gravity, air Resistance, Falling
Most recent answer: 01/28/2015
- Will (age 16)
Lausanne, Vaud, Switzerland
One way to help sort out such issues is to think of extreme cases. If neither the shape nor the size of the ball matters, think of a ball that's made out of protein stretched out into many fine little rods- in other words, a feather. Does it fall at the same rate as a golf ball? The world gives you the answer, without having to think about school or books.
You've described a basic law of simplified, idealized physics, in which factors like air resistance are neglected. Laws like that are wonderful tools to help grasp basic principles, but ought not be applied without considering a realistic full physical picture. We live on a planet with an atmosphere. It creates frictional forces.
(published on 01/28/2015)