# Free Fall - North Hunterdon-Voorhees Regional High School ...

Free Fall Objectives 1.) define free fall 2.) explain that all falling objects accelerate 3.) agree that all objects fall at the same rate 4.) write the free fall equations Free Fall

Introduction Free Fall motion caused only by gravity all objects fall at the same rate - works in a vacuum: area with no air - ignores air resistance Acceleration Due to Gravity is a constant. is called g is = 10 m/s2 on surface of earth is different on the moon, but still constant

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 vv gt Vertical Distance Equation

1 d v gt 2 2 Time to Fall Equation 2d v t g

One more free fall Worksheet A Free Fall Equations 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 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) Answer 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 dv = 1000 m Equation

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

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 Steps

1. Multiply g times time vv gt Vertical Distance dv 0.5gt 2 Steps 1. Square time (multiply by itself) 2. Multiply by g

3. Multiply by 0.5 Time to Fall 2d v t g Steps 1. multiply dv times 2 2. divide by g 3. Press =

4. Press the square root button

## Recently Viewed Presentations

• Shifting (or sharing) the risk for some aspect of the project . Acting to reduce the probability and/or impact . Deciding to live with the risk. Work through the risk strategies asking the participants what they think is meant by...
• Trade Policy and WTO Accession for Economic Development: Application to Russia and the CIS Module 2 Openness, Growth and Poverty by Giorgio Barba Navaretti and Marcello Spanò December 13, 2004 Main questions addressed Which are the channels through which trade...
• Vertical Coordinates and Nesting Vertical Coordinate Systems Originally p and z: but they had a problem…BC when the grid hit terrain! Then eta, sigma p and sigma z, theta Increasingly use of hybrids- e.g., sigma-theta Sigma Sigma-Theta Hybrid and Eta...
• We can use cross validation to find k * Minutiae (Galton Details) Ridge Ending Enclosure Bifurcation Island Sir Francis Galton 1822-1911 Galton's mathematical conclusions predicted the possible existence of some 64 billion different fingerprint patterns * 1 1 1 1...
• CPI does not measure price levels. CPI is a price perspective measure and cost-of-living index is an expenditure oriented measure . Data (market readings) are captured monthly. Key variables are prices, quantities and expenditure weights of items. Price reference year...
• 1.6 Introduction to Object Technology (Cont.) Inheritance. A new class of objects can be created quickly and conveniently by inheritance—the new class absorbs the characteristics of an existing class, possibly customizing them and adding unique characteristics of its own. Using...
• (NRC Glossary):In the regulatory arena, this term applies to systems, structures, components, procedures, and controls (of a facility or process) that are relied upon to remain functional during and following design-basis events. Their functionality ensures that key regulatory criteria, such...
• Sterilization and Disinfection S.K.Madhup DH,KUH