JefferyT JefferyT
  • 18-08-2017
  • Chemistry
contestada

A ball rolls along a smooth horizontal floor at 10 m/s, then starts up a 20 degree ramp. How high does it go before rolling back?

Respuesta :

amirreza688 amirreza688
  • 19-08-2017
If we neglect friction then only mgsin20 lower the speed of the ball
ma=mgsin20
a=gsin20=3.4 m/s^2
of course we insert it next formula with a negative because the speed decreases
v^2-v0^2=2ah
100-0=6.8h
h=100/6.8=14.7 m
Answer Link

Otras preguntas

Will give brainliest! Who created binary, and does anyone have any idea how?
Significado del refran Donde fueres haz lo que vieres​
who has an acount on padl et or on now
pls help me it is important to me
A stick 1 meter long casts a shadow 0.5 meters long. A building casts a shadow 16 meters long. How tall is the building?
Evaluate expression below if t=3 2t+7-t+1
2. A video game costs $64. The store is having a sale of 15% off everything and the sales tax is 9%. What is the final price after the discount plus tax?
Is the word bereft used correctly? The bereft husband felt depressed after losing his wife.
Will give 20 points and give brainliest if all answers is correct and understandable. Katie plans to paint four toy chests that have the given net. She will buy
THEY ARE REAL- PLEASE THEY AREN’T FAKE