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Other => Off-topic => Topic started by: XinXan on June 11, 2015, 04:00:11 PM



Title: How do yo calculate how long would take for an object to fall?
Post by: XinXan on June 11, 2015, 04:00:11 PM
Say a ball of 1Kg, you let it fall (frefall) from 50 meters, how long does it take to reach the ground? Whats the formula


Title: Re: How do yo calculate how long would take for an object to fall?
Post by: rapsaodan84 on June 11, 2015, 04:04:38 PM
Say a ball of 1Kg, you let it fall (frefall) from 50 meters, how long does it take to reach the ground? Whats the formula

If you ignore the resistance of the air then the formula you're looking for is:
distance = initial velocity (0 if the object is dropped) • time + ½ • gravity • time^2
from there you can calculate time.

Check "Example Problem A" here: http://www.physicsclassroom.com/class/1DKin/Lesson-6/Kinematic-Equations-and-Free-Fall


Title: Re: How do yo calculate how long would take for an object to fall?
Post by: Gleb Gamow on December 14, 2017, 12:23:03 AM
Say a ball of 1Kg, you let it fall (frefall) from 50 meters, how long does it take to reach the ground? Whats the formula

If you ignore the resistance of the air then the formula you're looking for is:
distance = initial velocity (0 if the object is dropped) • time + ½ • gravity • time^2
from there you can calculate time.

Check "Example Problem A" here: http://www.physicsclassroom.com/class/1DKin/Lesson-6/Kinematic-Equations-and-Free-Fall


Okay, so what's the formula in a Flat-earth model where gravity doesn't exist?