1 / 3

Collisions 2

Collisions 2. Car A has a mass of 1500 kg and is traveling at a velocity of 20 m/s East. Car B has the same mass but is traveling at a velocity of 10 m/s West. Then they collide and stick together. Find their final velocity. Before: A(East (+)) B(West). After: A+B. v= -10m/s. v= 20m/s.

jemima-bowman
Download Presentation

Collisions 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Collisions 2 Car A has a mass of 1500 kg and is traveling at a velocity of 20 m/s East. Car B has the same mass but is traveling at a velocity of 10 m/s West. Then they collide and stick together. Find their final velocity. Before: A(East (+))B(West) After: A+B v= -10m/s v= 20m/s v=? m= 1500kg m= 1500kg m= 3000kg P= -15,000kgm/s P= 30,000kgm/s P= 15,000kgm/s v= P/m Total P= 15,000kgm/s v=15,000kgm/s / 3000kg v= 5m/s East

  2. Collisions 3 A fly (0.005kg) is flying East @ 10 m/s. It collides head on with a 2,000kg Westbound car going 25m/s (speed limit). Of course they stick. Find the v. Before FlyCar After P= -49,999.95 kgm/s m= .005 kg m= 2,000 kg m= 2,000.005 kg v= 10 m/s v= -25 m/s v=? P= .05 kgm/s P= -50,000 kgm/s v= P/m Total P= 50,000.05 kgm/s? v= -24.9999 m/s No, Total P= -49,999.95 kgm/s Or v= 24.9999 m/s West Bet he doesn’t have the guts to do that again!!

  3. Explosions 1 A 4.3kg rifle fires a 94 gram bullet with a 1.167E-3 second 57,228.7 N force. Find v of the bullet and the gun. The total momentum before is zero. After GunBullet F= 57,228.7N F= -57,228.7N m= 4.3kg m= 94g v= ? v=? t= 1.167E-3 s t= 1.167E-3 Ft= m v v= Ft/m v= Ft/m =57,228.7N(1.167E-3s)/4.3kg =-57,228.7N(1.167E-3)/.094kg = -710m/s =15.5 m/s

More Related