# Quick Answer: What Two Variables Are Acceleration Dependent?

## What is the inertia formula?

For a point mass, the moment of inertia is just the mass times the square of perpendicular distance to the rotation axis, I = mr2.

That point mass relationship becomes the basis for all other moments of inertia since any object can be built up from a collection of point masses..

## Does inertia depend on weight?

Inertia affects all objects, and all objects have mass. … The larger the mass of an object the more inertia it has. Finally, the weight of an object has to do with the the amount of gravity that is being pulled down upon it.

## What 2 things affect acceleration?

Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both. If you’re not changing your speed and you’re not changing your direction, then you simply cannot be accelerating—no matter how fast you’re going.

## What are 3 examples of Newton’s second law?

Examples of Newton’s 2nd Law  If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.  It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one.

## Why is acceleration constant in free fall?

Freefall is a special case of motion with constant acceleration, because acceleration due to gravity is always constant and downward. This is true even when an object is thrown upward or has zero velocity. … Acceleration from gravity is always constant and downward, but the direction and magnitude of velocity change.

## What is the best example of Newton second law of motion?

Newton’s Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass. Your leg muscles pushing pushing on the pedals of your bicycle is the force.

## What is Newton’s second law in simple terms?

Newton’s second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the direction of the force.

## Is initial velocity a force?

Forces acting on an object cause it to accelerate. … The initial velocity,vi is the velocity of the object before acceleration causes a change. After accelerating for some amount of time, the new velocity is the final velocity, vf.

## Do heavier objects fall faster?

Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.

## How does force affect acceleration?

The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

## What is required to cause acceleration?

An object will continue in its state of motion unless an unbalanced force is acting on it. If forces are balanced, then the net force equals 0. This means that there is no acceleration. … An unbalanced force (or non-zero net force) is needed to cause acceleration.

## What 3 things affect acceleration?

The acceleration of an object increases with increased force, decreases with increased mass, and is in the same direction as the force.

## Does the initial velocity affect acceleration?

3. Initial velocity is independent of the slope of the graph; that is, the acceleration. An object thrown downward still accelerates after release at the same rate as an object that is dropped.

## Which bottle has greatest inertia?

Answer. Answer: (a) A stone of the same size as rubber ball has more mass. As mass is a measure of inertia, therefore, stone has more inertia than a rubber ball.

## What is Newton’s second law for dummies?

Newton’s second law of motion states that if a net force acts on an object, it will cause an acceleration of that object. The law addresses the cause and effect relationship between force and motion commonly stated as F = ma, where m is the proportionality constant (mass).

## Why is G negative free fall?

Any object affected only by gravity (a projectile or an object in free fall) has an acceleration of -9.81 m/s2, regardless of the direction. The acceleration is negative when going up because the speed is decreasing. … If the equation has g in it, like W = mg, direction is implied and the acceleration is positive.

## What is the difference between acceleration and velocity?

Here are the basic definitions of velocity and acceleration: velocity – the rate of displacement of a moving object over time. acceleration – the rate of velocity change over time.

## What force is required to accelerate a body?

What is the force required to accelerate an object with a mass of 20 kg from stationary to 3 m/s2? Newtons are a derived unit, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared.

## What two variables create an object’s inertia?

Inertia is that quantity which depends solely upon mass. The more mass, the more inertia. Momentum is another quantity in Physics which depends on both mass and speed.

## When acceleration is zero What happens to velocity?

Acceleration is the change in velocity per unit time. So when acceleration is zero, there is no change in velocity i.e,velocity is constant. When acceleration is zero …that means the rate of change of velocity is zero ..

## Why does weight not affect acceleration?

“What are the factors that affect the acceleration due to gravity?” Mass does not affect the acceleration due to gravity in any measurable way. The two quantities are independent of one another. Light objects accelerate more slowly than heavy objects only when forces other than gravity are also at work.