# Question #bab32

##### 3 Answers

When an object is dropped so that only the force of gravity is acting on it, the symbol for acceleration becomes

**Example 1. Dropping a book from a height of #"1.50"# meters.**

How long will it take the book to land, and what will its final velocity be?

**Known/Given:**

**Unknown:**

time,

final velocity

**Equations:**

**Solution:**

First, determine the final velocity of the book when it lands using the kinematic equation

(Remember that a square root is + or -, and the downward motion is negative.)

Now determine the time it takes for the book to land using the equation

Since

So, if you drop a book from a height of

**Example 2. Throwing a book down from a height of #"1.50m"#.**

Lets say you threw a book down with an initial velocity of

How long will it take the book to land, and what will its final velocity be?

**Known/Given:**

**Unknown:**

time,

final velocity

**Equations:**

**Solution:**

First, determine the final velocity of the book when it lands using the kinematic equation

(Again, remember that a square root is + or -, and here the downward motion is negative.)

Now determine the time it takes the thrown book to land using the equation

So a book thrown down from a height of

Yes. When an object is dropped, its initial velocity is zero and its acceleration is that of gravity, which is

There are four kinematic equations that are used to study motion in one direction. .

Two of these equations will be used to test how fast an object falls, and its final velocity.

**Note:** When an object is dropped so that only the force of gravity is acting on it, the symbol for acceleration becomes

When an object is dropped so that only the force of gravity is acting on it, the symbol for acceleration becomes

**Example 1. Dropping a book from a height of #"1.50"# meters.**

How long will it take the book to land, and what will its final velocity be?

**Known/Given:**

**Unknown:**

time,

final velocity

**Equations:**

**Solution:**

First, determine the final velocity of the book when it lands using the kinematic equation

(Remember that a square root is + or -, and the downward motion is negative.)

Now determine the time it takes for the book to land using the equation

Since

So, if you drop a book from a height of

**Example 2. Throwing a book down from a height of #"1.50m"#.**

Lets say you threw a book down with an initial velocity of

How long will it take the book to land, and what will its final velocity be?

**Known/Given:**

**Unknown:**

time,

final velocity

**Equations:**

**Solution:**

First, determine the final velocity of the book when it lands using the kinematic equation

(Again, remember that a square root is + or -, and here the downward motion is negative.)

Now determine the time it takes the thrown book to land using the equation

So a book thrown down from a height of

Yes. When an object is dropped, its initial velocity is zero and its acceleration is that of gravity, which is

There are four kinematic equations that are used to study motion in one direction. .

Two of these equations will be used to test how fast an object falls, and its final velocity.

**Note:** When an object is dropped so that only the force of gravity is acting on it, the symbol for acceleration becomes

**Example 1. Dropping a book from a height of #"1.50"# meters.**

How long will it take the book to land, and what will its final velocity be?

**Known/Given:**

**Unknown:**

time,

final velocity

**Equations:**

**Solution:**

First, determine the final velocity of the book when it lands using the kinematic equation

(Remember that a square root is + or -, and the downward motion is negative.)

Now determine the time it takes for the book to land using the equation

Since

So, if you drop a book from a height of

**Example 2. Throwing a book down from a height of #"1.50m"#.**

Lets say you threw a book down with an initial velocity of

How long will it take the book to land, and what will its final velocity be?

**Known/Given:**

**Unknown:**

time,

final velocity

**Equations:**

**Solution:**

First, determine the final velocity of the book when it lands using the kinematic equation

(Again, remember that a square root is + or -, and here the downward motion is negative.)

Now determine the time it takes the thrown book to land using the equation

So a book thrown down from a height of