A baseball is seen to pass upward by a window


Asked by wiki @ in Physics viewed by 40 People


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. a)What was its initial speed?

b)What altitude does it reach?
c)What time elapsed since it was thrown?
d)What time will it take the baseball to reach ground again, counting from the moment it passed the window upward?

Answered by wiki @



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,

v=u+at\\s=ut+\dfrac{1}{2}at^2\\v^2=u^2+2as

Here, u is the initial velocity, a is the acceleration, v is the velocity, t is the time, and s 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.

  • a)The initial speed-

13^2=v_0^2\times2\times9.81\times19\\v_0=23.26\rm m/s

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.

0=23.26^2+2\times9.81\times h\\h=27.6\rm m

  • c)The time elapsed since it was thrown-

To find the t use the formula shown above,

13=23.26+(-9.8)\times t\\t=1.05\rm s

  • 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,

0=23.26\times(-9.8)t\\t=2.37

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,

t=2.37\times2\\t=4.74\rm s

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


Do you know the better answer?

Similar Questions

What things below were invented or marketed in 1963 america

Asked by wiki @ in History viewed by 149 persons

What things below were invented or marketed in 1963 America? touch-tone phone Valium mini-skirt cassette player weather satellite eight-track player

Slaves were held in all thirteen of the original colonies

Asked by wiki @ in History viewed by 195 persons

TRUE OR FALSE. Slaves were held in all thirteen of the original colonies

4 5 divided by 3 4

Asked by wiki @ in Mathematics viewed by 137 persons

What is 4/5 divided by 3/4 as I fraction in simplest form

4 when making a right turn the driver should _______________________

Asked by wiki @ in Social Studies viewed by 170 persons

When making a right turn, the driver should _______________________. a. slow down and then merge with the bicycle lane b. speed up and then merge with the bicycle lane c. …

My grandmother asked me to tell you she's sorry questions

Asked by wiki @ in English viewed by 212 persons

I need a 3-4 page summary of My grandmother asked me to tell you she's sorry. I would really like to receive it in about 2 weeks PLEASE!!

Public policy can be best defined as

Asked by wiki @ in Social Studies viewed by 146 persons

Public policy can be best defined as A.a course of action the government takes in response to an issue or problem. B.a decision made by all registered voters to change …

What is the outcome of meiosis

Asked by wiki @ in Biology viewed by 23 persons

What is the outcome of meiosis

How did the us get involved in the korean war

Asked by wiki @ in History viewed by 163 persons

Why did the united states get involved in the korean war? what was the outcome of the war?

Explain the causes and effects of the indian removal act

Asked by wiki @ in History viewed by 207 persons

Explain the causes and effects of the Indian Removal Act and the Trail of Tears.

What is the role of computer in our daily life

Asked by wiki @ in Computers and Technology viewed by 171 persons

Describe the application of computer system in our daily life​

Which of the following is the best definition of bias

Asked by wiki @ in English viewed by 128 persons

Which of the following is the best definition of the term bias

What is a major difference between prokaryotes and eukaryotes

Asked by wiki @ in Biology viewed by 132 persons

What is a major difference between prokaryotes and eukaryotes? a. Prokaryotes have no nucleus. b. All prokaryotes cause disease. c. Eukaryotes contain more mitochondria. d. Nucleic acids are founds only …

Which pair of triangles can be proven congruent by sas

Asked by wiki @ in Mathematics viewed by 226 persons

Which pair of triangles can be proven congruent by SAS?

The numerical ratio of average velocity to average speed is

Asked by wiki @ in Geography viewed by 173 persons

The numerical ratio of average velocity to average speed is

This is word part after all affixes have been removed

Asked by wiki @ in English viewed by 144 persons

This is word part after all affixes have been removed

What has research shown about processing subliminal messages

Asked by wiki @ in Social Studies viewed by 155 persons

What has research shown about processing subliminal messages? in laboratory settings, people can process and respond to information outside of their awareness. in laboratory settings, people do not perceive information …

Why is it difficult to grow crops in northern mexico

Asked by wiki @ in Social Studies viewed by 96 persons

Why is it difficult to grow crops in northern Mexico?

What is the square root of 192 in radical form

Asked by wiki @ in Mathematics viewed by 173 persons

Whats the radical form of 192????

Explain how technology has affected people's activity levels

Asked by wiki @ in Health viewed by 146 persons

Explain how technology has affected people's activity levels.

How to find out the time signature of a song

Asked by wiki @ in Arts viewed by 108 persons

What does the time signature tell us? Why do you think it is important to know the time signature?

Which type of proteins contain all nine essential amino acids

Asked by wiki @ in Health viewed by 262 persons

__________ contain all nine essential amino acids.

What part of the body is damaged by a sprain

Asked by wiki @ in Health viewed by 112 persons

What part of the body is damaged by a sprain? ligament bone muscle tendon

If rt is greater than ba which statement is true

Asked by wiki @ in Mathematics viewed by 104 persons

If RT is greater than BA, which statement is true? By the converse of the hinge theorem, mC = mS. By the hinge theorem,TS > AC. By the converse of …

Which of these was true under the articles of confederation

Asked by wiki @ in History viewed by 15 persons

Which of these was true under the Articles of Confederation? A.) Congress could raise taxes. B.) Congress had great power to enforce laws. C.) Each state had one vote in …

Exhibit display send

Asked by wiki @ in English viewed by 29 persons

Exhibit : display :: send :_______? a. show b. emit c. receive d. stamp

Tammy buys a 4 gigabyte memory card for her camera

Asked by wiki @ in Mathematics viewed by 246 persons

Tammy buys a 4-gigabyte memory card for her camera. Dijonea buys a memory card with twice as much storage as Tammy’s. One gigabyte is 1,024 megabytes. How many megabytes of …

Which of the following is not an optical storage device

Asked by wiki @ in Computers and Technology viewed by 123 persons

Which of the following is an example of an optical storage device? A. flash drive B. compact disk C. memory card D. hard drive E. smart card

No papa telling lies no papa open your mouth hahaha

Asked by wiki @ in English viewed by 135 persons

Johnny Johnny yes papa are u eating sugar no papa are u telling lies no papa open your mouth hahaha

Who are some of the refugees who have fled political

Asked by wiki @ in English viewed by 34 persons

Number of the stars: who are some of the refugees who have fled political or social tyranny and come to the United States in recent decades PLZ HELP

If cinderella's shoe fit perfectly why did it fall off

Asked by wiki @ in History viewed by 32 persons

if the glass slippers fit on cinderella perfectly, how did they fall off of her when she was running away.​

Most viewed questions in Physics


A 0.25 kg arrow with a velocity of 12m s

Asked by wiki @ in Physics viewed by 776 persons


Uranium 235 undergoes an alpha decay to produce thorium 231

Asked by wiki @ in Physics viewed by 761 persons


A golf club hits a stationary 0.050 kilogram golf ball

Asked by wiki @ in Physics viewed by 656 persons



Water waves in a small tank are 06 m long

Asked by wiki @ in Physics viewed by 642 persons


In which electric circuit would the voltmeter read 10 volts

Asked by wiki @ in Physics viewed by 602 persons


A tank of water in the shape of a cone

Asked by wiki @ in Physics viewed by 599 persons



A 90 kg person rides a spinning amusement park ride

Asked by wiki @ in Physics viewed by 591 persons


How many times does your heart beat during your lifetime

Asked by wiki @ in Physics viewed by 576 persons


The initial speed of a cannonball is 0.20 km s

Asked by wiki @ in Physics viewed by 569 persons



All of the following are advantages of outsourcing except it

Asked by wiki @ in Physics viewed by 550 persons


A 5.8 x 10 4 watt elevator motor can lift

Asked by wiki @ in Physics viewed by 542 persons


A 60 kilogram student jumps down from a laboratory counter

Asked by wiki @ in Physics viewed by 533 persons



7 types of electromagnetic waves from lowest to highest frequency

Asked by wiki @ in Physics viewed by 495 persons


A golfer hits a ball at an angle of 25

Asked by wiki @ in Physics viewed by 474 persons


Which of the following statements about diffusion is true

Asked by wiki @ in Physics viewed by 452 persons