Answer:
11:1
Explanation:
At constant acceleration, an object's position is:
y = y₀ + v₀ t + ½ at²
Given y₀ = 0, v₀ = u, and a = -g:
y = u t − ½g t²
After 6 seconds, the ball reaches the maximum height (v = 0).
v = at + v₀
0 = (-g)(6) + u
u = 6g
Substituting:
y = 6g t − ½g t²
The displacement between t=0 and t=1 is:
Δy = [ 6g (1) − ½g (1)² ] − [ 6g (0) − ½g (0)² ]
Δy = 6g − ½g
Δy = 5½g
The displacement between t=6 and t=7 is:
Δy = [ 6g (7) − ½g (7)² ] − [ 6g (6) − ½g (6)² ]
Δy = (42g − 24½g) − (36g − 18g)
Δy = 17½g − 18g
Δy = -½g
So the ratio of the distances traveled is:
(5½g) / (½g)
11 / 1
The ratio is 11:1.
Answer:
Different
Explanation:
The hollow one will expand even more making it have a larger volume then the solid one so they are different
Answer:
Temperature is a measure of the average energy of molecular motion in a substance. In everyday usage, temperature indicates a measure of how hot or cold an object is. Temperature is an important parameter in chemistry. When a substance changes from solid to liquid, it is because there was in increase in the temperature of the material. Chemical reactions usually proceed faster if the temperature is increased.
Absolute zero is the lowest temperature in Kelvin which all motion stops. Absolute zero is called 0 Kelvin (0 K), and it is equivalent to –273.15°C or –459.67°F.
Assume you need to know to what extent it will take you to get from your
house to some other place. You ask me, and I say, "It will take 5."
5 what? 5 minutes? 5 hours? 5 days?
We utilize numbers to speak to stuff on the planet. Some of the time it's simply
checking, e.g.,
I discovered 9 mushrooms today.
I discovered 18 yesterday.
So now I have 9 + 18 = 27 mushrooms.
Yet, some of the time we're utilizing numbers to speak to things that we measure,
like separations or weights or ranges:
I have a board 12 feet long.
I need to cut it into pieces 3 feet long.
I can cut it into (12 feet)/(3 feet for each piece) = 4 pieces.
We can utilize diverse methods for measuring something, e.g.,
I have a board 144 inches in length.
I need to cut it into pieces 3 feet long.
In the event that I simply isolate 144 by 3, without focusing on units, I get an
reply of 48. In any case, what does it mean? It's an indistinguishable issue from
some time recently, since 144 inches is an indistinguishable thing from 12 feet! So I would do well to
find a similar solution - 4 pieces, not 48. To find a similar solution, I have
to change my units:
I have a board 144 inches in length.
I need to cut it into pieces 36 inches long.
I can cut it into (144 inches)/(36 inches per piece) = 4 pieces.
So units are the means by which we ensure that our figurings about the world
Answer:Rolling friction is friction that acts on objects when they are rolling over a surface. Rolling friction is much weaker than sliding friction or static friction. This explains why most forms of ground transportation use wheels, including bicycles, cars, 4-wheelers, roller skates, scooters, and skateboards.
Explanation: