Path: ...!weretis.net!feeder8.news.weretis.net!fu-berlin.de!uni-berlin.de!news.dfncis.de!not-for-mail From: Luigi Fortunati Newsgroups: sci.physics.research Subject: Re: Free fall Date: 24 Mar 2024 08:41:44 GMT Organization: A noiseless patient Spider Lines: 17 Approved: hees@itp.uni-frankfurt.de (sci.physics.research) Message-ID: References: Reply-To: fortunati.luigi@gmail.com X-Trace: news.dfncis.de Bact2yqhjWWjgYza5SwxHQ4HNB7/hkOPEWxdJ19pZQxr3a4qXTdv3Fpl8E Cancel-Lock: sha1:fYjZeNU7nxI7ZmTlNL5Eh3iPXic= sha256:CMzweWOcdJa44KDc5N0JQ2OaJaC8hpXt1Zg+t6iNGS4= Bytes: 1818 Mikko il 15/03/2024 06:21:00 ha scritto: >> Of course you can't fall straight up and you can't fall sideways. > > You can if you have initial motion in that direction. The fall (obviously) is an acceleration: you do not fall at a constant speed. If you fire a shot upwards, the projectile has an initial acceleration upwards (in the barrel of the gun) but this initial movement no longer has any influence when the projectile exits the barrel and is in free fall. In this last phase, the projectile "falls" (i.e. accelerates) always downwards and never in another direction. Luigi Fortunati