Contents

- 1 What is the net force on a 1 N Apple when you hold it at rest?
- 2 When an apple that weighs 1 N is dropped and freely falls the net force on the apple is?
- 3 When you hold an apple above your head how many forces act on the apple?
- 4 How is net force calculated?
- 5 What is the net force acting on a 1 kg ball in free fall?
- 6 What is the net force of an object at rest?
- 7 When you push against a wall What pushes back?
- 8 When the net force on an object is zero its acceleration?
- 9 What is the net force that acts on a 10n free falling object?
- 10 Why does weight not affect acceleration?
- 11 What force causes an apple to fall from a tree?
- 12 What law is best described by inertia?
- 13 Do you add or subtract to find net force?
- 14 Can Net Force be negative?
- 15 What is a balanced force?

## What is the net force on a 1 N Apple when you hold it at rest?

The **apple** is held at **rest**, therefore, the **net force** is 0N. When **you** drop the **apple** the **net force** on the **apple** is just due to its weight W = **1N**.

## When an apple that weighs 1 N is dropped and freely falls the net force on the apple is?

when an **apple that weighs 1N is dropped and freely falls, the net force on the apple is**. **1N**.

## When you hold an apple above your head how many forces act on the apple?

(**a**) Two **force** pairs **act**; Earth’s pull on the **apple** (action), and the **apple’s** pull on the Earth (reaction). Hand pushes **apple** upward (action), and **apple** pushes hand downward (reaction).

## How is net force calculated?

FN is the **force** acting on a body. When the body is at rest, the **net force** formula is given by, F** _{Net}** = F

_{a}+ F

_{g}.

## What is the net force acting on a 1 kg ball in free fall?

The net force acting on 1-kg ball in free fall is 9.8 **N**.

## What is the net force of an object at rest?

The **net force** is the vector sum of all the **forces** acting on an **object**. When an **object** is in equilibrium (either at **rest** or moving with constant velocity), the **net force** acting on it zero. A vector can only have zero magnitude if all of its components are zero.

## When you push against a wall What pushes back?

According to Newton’s third law of motion, forces always act in equal but opposite pairs. Another way of saying this is for every action, there is an equal but opposite reaction. This means that **when you push** on a **wall**, the **wall pushes back** on **you** with a force equal in strength to the force **you** exerted.

## When the net force on an object is zero its acceleration?

Newton’s First Law can be seen to be the special case in the Second Law when F, the **net force**, is **zero**. When that happens, the **acceleration** a must also be **zero**. Since **acceleration** is given by the change of velocity divided by elapsed time, the velocity doesn’t change.

## What is the net force that acts on a 10n free falling object?

The ratio of force to mass for free falling objects is equal to the **force of gravity** ‘g’ which at the surface of the earth is equal to 9.8 m/s2. What is the net force that acts on a 10-N freely falling object? The net force acting on a 10 N free falling object is 100 N (98 N to be precise).

## 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.

## What force causes an apple to fall from a tree?

An apple hanging on a tree is acted upon by two basic forces: 1) the downward force exerted by the **gravity** force and, 2) the upward force exerted by the tree limb. The downward **gravity** force is also know as “**weight**“.

## What law is best described by inertia?

**Law** of **inertia**, also called Newton’s first **law**, postulate in physics that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

## Do you add or subtract to find net force?

**Net force** is determined by **adding** up all of the individual **forces** on an object. For example, to **determine** the **net force** on an airplane, **you would add** up the lift, weight, thrust, and drag. If **forces** are in opposite directions, like lift and weight, then **you subtract** them.

## Can Net Force be negative?

Yes. **Force can** be **negative**. Suppose you apply a **force** but you aren’t able to move it in the direction you apply **force**, so logically you aren’t able to apply **force** in the desired direction but you are being overcome by the **force** applied the other object. So the **net force** you apply is **negative**.

## What is a balanced force?

**Balanced forces** are equal in size and opposite in direction. When **forces** are **balanced**, there is no change in motion. In one of your situations in the last section, you pushed or pulled on an object from opposite directions but with the same **force**.