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

Question

asked Nov 22, 2018 149k views

1 Answer

asked Dec 19, 2018 219k views

Deepak Chaudhary asked Dec 19, 2018

7.6k points

1 answer

3 votes

219k views

asked May 8, 2018 31.3k views

Mororo asked May 8, 2018

8.2k points

1 answer

1 vote

31.3k views

asked Apr 26, 2018 210k views

Count Chocula asked Apr 26, 2018

8.1k points

2 answers

2 votes

210k views

Bartu · Answer 1 · 2018-11-27T14:44:23+0000

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