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Montano1993 [528]
3 years ago
8

Why does a rolling sphere slows down?​

Physics
2 answers:
Lera25 [3.4K]3 years ago
5 0

Friction is resisting gravity and eventually it stops

VLD [36.1K]3 years ago
3 0

The sphere slow down due to friction force between the surface of the sphere and the surface on that the sphere is rolling . The friction force acting against the motion of the sphere. Thats why it is slowed down. In fact not only a sphere, anything can not slow down untill a force act against it's motion.

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Snowflakes begin to form when water in the atmosphere freezes it causes the water molecules to bond into a hexagonal shape. Is t
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So the complete question along with options is:

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3 0
3 years ago
Help me solve this please
Leto [7]
Since it's a projectile being launched the only force acting upon it is gravity, since the object is in free fall once it's launched

so to calculate time you'd utilize the general formula of
xf = xi + vxi(t) + \frac{1}{2} (a) {t}^{2}
and then solve using time and make it into the y axis, so change the x's to y's, which will change a to g.
since Vyi is always usually 0, you can drop that out of this equation so the formula to find time would be
t =  \sqrt{ \frac{2(y)}{g} }
So you'll plug in and it'll be
t =  \sqrt{ \frac{2( - 49m)}{ - 9.81 \frac{m}{s {}^{2} } } }
to find the maximum height you'll have to do some trigonometry to solve it.
To make it easier draw a triangle
put the 60° mark as shown in the picture.
Then you'll need to find the hypotenuse or horizontal to find the vertical
So the hypotenuse would be the 113m/s
so then you'll use
\ \sin( 60) = ( \frac{o}{h})

plug in the numbers
113( \ \sin (60) ) = o
now that you have the vertical

use the formula
{vf}^{2}  =  {vi}^{2}  + 2gd
solve for d which will give you the hypotenuse
d = { (-vertical \frac{m}{s} )}^{2}  \div 2( - 9.81 \frac{m}{ {s}^{2} } )
The "vertical" is what you found in the previous step.
Vf^2 is equal to 0 so you can just drop that number out since it's 0
then once you have that then youre not done yet
since you're on a cliff of 49 m you'll have to add 49m to the previous answer that you found d to find the maximum height.

I hope this helps!

6 0
3 years ago
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