To find the **velocity **or **acceleration **of a object , we use three **equations **of motion.

- a)The initial
**speed **of the ball is **23.26 **m/s.

- b)The
**altitude **reaches by the ball is **27.6 **m.

- The
**time elapsed **since it was thrown is **1.05 **s.

- The
**time **will it take the baseball to reach ground again, counting from the moment it **passed **the **window **upward is **3.69 **s.

### What are the equations of motion?

To find the **velocity **or **acceleration **of a object , we use **three equations **of motion as,

Here, is the initial **velocity**, is the **acceleration**, is the velocity, is the **time**, and is the **distance **traveled.

**Given information-**

A baseball is seen to pass **upward **by a window with a vertical **speed **of **13 **m/s.

The **ball **was thrown by a person **19 **m below on the street.

Thus the **initial **speed is **23.26 **m/s.

- b)The
**altitude **does it reach-

At the **maximum **height , the velocity of the ball becomes **zero**.

- c)The
**time **elapsed since it was thrown-

To **find **the t use the **formula **shown above,

- d)The
**time **will it take the baseball to reach ground again, counting from the moment it **passed **the **window **upward-

The **time ***t* has to be obtained for the **maximum height **as,

Thus the **time **taken to reaches at **maximum **speed is **2.37**, which half the time taken by the ball **up **and **down**. Thus the time for both **up** and **down **can be given as,

Thus,

- a)The initial
**speed **of the ball is **23.26 **m/s.

- b)The
**altitude **reaches by the ball is **27.6 **m.

- The
**time elapsed **since it was thrown is **1.05 **s.

- The
**time **will it take the baseball to reach ground again, counting from the moment it **passed **the **window **upward is **3.69 **s.

Learn more about the **equation of the motion **here;

brainly.com/question/8898885