IT'S URGENT PLZZZZZZZZZ HELP SOMEONE HELP PLZZZZZZZZZZZZZZZ I NEED IT PLZZZZZZZZZZZZZZZZZZ!!!

asked Nov 22, 2018 149k views

1 vote

7.1k points

Please log in or register to add a comment.

3 votes

At start: PE only

At end: KE and energy lost to friction

PE = KE + E
E = PE - KE
= mgh - (1/2)mv^2
= (40)(9.8)(12) - (.5)(40)(10)^2
= 2704J

Bartu answered Nov 27, 2018

by Bartu

7.6k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.4m questions

11.0m answers