If there is no air, the same exact time. But because its on earth, the less dense and less aerodynamic one will land slightly after. Acceleration is about -9.8 meters per second every second
The balls land at the same time
Interesting question. But when the object is at rest the potential energy of the object is 0, on the surface that is. When it is on a height h it's potential energy increase and when it is dropped from that height all that potential energy gets converted to kinetic energy just before hitting the ground. This extra force comes from this kinetic energy.
If there was no air resistance and a feather and a penny were dropped from the same height they would both pick up speed by the same amount and they would hit the ground at the same speed and at the same time.
If they are dropped in a totally controlled manner then they would land in the same spot. However, if dropped by hand, there will be minor differences in the positions of the hand which will affect the outcomes.
Not really. Length is preferable, as height may be confused for the height the snake can raise itself above the ground under its own strength.
The higher off the ground something is, the greater its GPE is. GPE=mass x gravitatonal constant x height.
A cannonball fired horizontally and one dropped from the height of the muzzle simultaneous with the shot will hit the ground at the same instant, provided only that the ground under the muzzle and the ground where the shot lands are at the same elevation, i.e. the shot was not fired off the edge of a cliff or into the side of a mountain. To solve this kind of problems, it often helps to separate the movement, or the speed, into vertical and horizontal components. In this case, the vertical component of the speed is the same.
4 seconds
Discounting any friction with the air, they would both hit the ground at the same time.
as done in Galileo's experiment when he dropped a large rock and a feather from a tall tower both hit the ground at the same moment when dropped from the same height.
381 metres
Yes
they would be in a vacuum
31 m/s
They will both hit the ground at the same time.
Assuming both were dropped from the same height above ground, in a vacuum both would hit the ground at the same time. In a significant atmosphere (e.g. average ground-level on Earch) the bowling ball would hit the ground first.
19.6 meters / 64.4 ft
If dropped from the same height, they will hit the ground at the same time.