When an object falls in air, it has to push through the air particles. This causes the object to fall slower. Objects are affected by gravity the same, but air resistance can affect the speed of an object’s descent. An object with more surface area will have more air resistance.

The general answer is YES, that is gravity is stronger than air resistance.

Terminal velocity

If there is no air resistance, after you let go of an object the only force on it is the gravitational force. More massive objects have a greater gravitational force. The acceleration of an object is proportional to the net force on the object and inversely proportional to the mass of the object.

Air resistance is insignificant for heavy objects precisely because it doesn’t depend on the mass. This is because a force is just an interaction that tries to change the momentum of an object, and the momentum depends on the mass; the larger the mass, the larger the momentum, and the more force you need to change it.

Air resistance depends on velocity, area, and shape of the object going through the air. Altitude, temperature, and humidity change air density and, consequently, its resistance. The higher the speed and the bigger the area, the higher the resistance.

Mount Nevado Huascarán in Peru has the lowest gravitational acceleration, at 9.7639 m/s2, while the highest is at the surface of the Arctic Ocean, at 9.8337 m/s2.

As acceleration is inversely proportional to mass, if mass increases, the acceleration will reduce ( keeping the force constant). We see that as the mass increases, acceleration reduces. So a heavier object is harder to accelerate than a lighter object.

No, heavier objects fall as fast (or slow) as lighter objects, if we ignore the air friction. The air friction can make a difference, but in a rather complicated way. The gravitational acceleration for all objects is the same.

After a two sample t-test, we find that heavier rolling objects have a statistically faster clear time for a given inclined plane in comparison to lighter rolling objects. In addition, heavier objects will be more resistant to the effects of air resistance and rolling resistance.

The change in speed on slopes is due to gravity. When going downhill, objects will accelerate (go faster), and when going uphill they will decelerate (slow down). On a flat surface, assuming that there is little friction, they will then maintain a constant speed.

Since the sliding object has no angular velocity, its linear velocity is greater than that of the rolling object, and it reaches the bottom of the track faster.

You should find that a solid object will always roll down the ramp faster than a hollow object of the same shape (sphere or cylinder)—regardless of their exact mass or diameter.

When objects slide down a slope, the downward force acting on them to produce acceleration is (mg [email protected] – friction) and = ma. So acceleration, a = g [email protected] – friction/mass. The heavier object will have a higher acceleration and so arrive faster.

According to the standard physics lore, the full one should roll faster if the contents are solid. That’s because the moment of inertia relative to its weight is less than that of the empty can. (That means more of the gravitational energy is converted to downward motion and less to turning motion.)

There will be a resultant force which will be proportional to the mass of the object. Hence an object with greater mass feels greater force than the other one. So even if the slope is same for both objects, a massive object moves faster through the slope than a less mass object.

For both interpretations, the answer is ‘yes’ since force still acts in an opposite force on anything which has mass. As you accelerate, your velocity increases and therefore mass will increase. The increase in mass will bring about an opposite force. The greater the mass, the greater the inertia.

Originally Answered: Does speed affect inertia? From Einstein’s relativity, yes, it does. The inertia at any given speed is given by where is the speed of light and is the inertia at rest.

Higher moments of inertia indicate that more force has to be applied in order to cause a rotation whereas lower moments of inertia means that only low forces are necessary. Masses that are further away form the axis of rotation have the greatest moment of inertia.