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Nookie1986 [14]
3 years ago
8

How long would it take for a ball dropped from the top of a 576-foot building to hit the ground? round your answer to two decima

l places?
Physics
1 answer:
LUCKY_DIMON [66]3 years ago
4 0
If a ball is if a ball is dropped from a 576ft building it would take about 8 seconds for it to hit the ground.
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An icy object moving through space in a highly eccentric orbit is called a
Daniel [21]

That's a good popular definition of a comet.

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3 years ago
Which item is heavier, 50 kg of cotton or 50 kg of iron?
Kipish [7]

Answer:

They weight the same

Explanation:

6 0
3 years ago
g A 5.60-kilogram hoop starts from rest at a height 1.80 m above the base of an inclined plane and rolls down under the influenc
swat32

Answer:

4.24m/s

Explanation:

Potential energy at the top= kinetic energy at the button

But kinetic energy= sum of linear and rotational kinetic energy of the hoop

PE= mgh

KE= 1/2 mv^2

RE= 1/2 I ω^2

Where

m= mass of the hoop

v= linear velocity

g= acceleration due to gravity

h= height

I= moment of inertia

ω= angular velocity of the hoop.

But

I = m r^2 for hoop and ω = v/r

giving

m g h = 1/2 m v^2 + 1/2 (m r^2) (v^2/r^2) = 1/2 m v^2 + 1/2 m v^2 = m v^2

and m's cancel

g h = v^2

Hence

v= √gh

v= √10×1.8

v= 4.24m/s

4 0
3 years ago
Read 2 more answers
Which type of energy is the original source for the energy that food molecules can provide?
Svet_ta [14]

Answer:

Chemical potential energy

Explanation:

which is used to for any form of energy.

4 0
3 years ago
EXPERTS/ACE and people that wanna help 4 sure only!
mario62 [17]
That first one you have selected (3,-3) works in both equations so it's correct.
good job.

you can do this guess and test method with multiple choice answers. If it works in both equations it is the solution. Otherwise use substitution or elimination to combine the two into one equation in only one variable. Then you can solve for the one variable first and use it to solve for the other.

3 0
3 years ago
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