Free fall By Khudaibergenov Bekhzod Contents



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Free-Fall Khudaibergenov Bekhzod

Free fall

Contents:

  • 1. Introduction
  • 2. Free fall equations key
  • 3. Some exapmles
  • 4. Free fall equations
  • Used literature

Introduction

Free Fall Equations Key

  • vv= vertical velocity (in m/s)
  • dv = vertical distance (in meters)
  • g = acceleration due to gravity (10 m/s2)
  • t = time (in seconds)

Vertical Velocity Equation

Vertical Distance Equation

Time to Fall Equation

1.) How fast will a ball be traveling if it falls for 5 seconds?

  • Data
  • Equation
  • Math
  • Answer
  • t = 5 seconds
  • g = 10 m/s2
  • • vv = gt
  • vv = 10(5)
  • vv = 50 m/s

2. An apple falls out of a tree and takes 1.75 seconds to strike the ground. How high was the apple from the ground?

  • Data
  • Equation
  • Math
  • Answer
  • t = 1.75 seconds
  • g = 10 m/s2
  • dv = 0.5gt2
  • dv = 0.5(10)(1.75)2
  • dv = 0.5(10)(3.06)
  • dv = 0.5(30.6)
  • dv = 15.3 m

3. A plane drops a C.A.R.E. package to some needy people in the jungle from a height of 1000 m. How long will it take the package to strike the ground?

  • Data
  • Equation
  • Math
  • Answer
  • dv = 1000 m
  • g = 10 m/s2
  • • t = √2dv/g
  • t = √2(1000)/10
  • t = √2000/10
  • t = √200
  • t = 14.1 seconds

Free Fall Equations

  •  Vertical Velocity
  • Steps
  • 1. Multiply g times time 
  • Vertical Distance 
  •   Steps
  • 1. Square time (multiply by itself)
  • 2. Multiply by g
  • 3. Multiply by 0.5
  • Time to Fall 
  • Steps
  • 1. multiply dv times 2
  • 2. divide by g
  • 3. Press =
  • 4. Press the square root button
  • Key: vv= vertical velocity (in m/s)
  • dv = vertical distance (in meters)
  • g = acceleration due to gravity (10 m/s2) t = time (in seconds)

Used literature

  • 1. Must-Know High School Physics by Christopher Bruhn
  • 2. Basic Physics: A Self-Teaching Guide by Karl F. Kuhn
  • 3. Fundamentals of Physics I: Mechanics, Relativity, and Thermodynamics by R. Shankar

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