What is the kinetic energy of a 1 kg ball thrown into the air with an initial velocity of 30 m/s

Answers

Answer 1

Answer:
Welll ... we can do the math and the physics and get an answer
for you, but then we'll really want to step back into the real world
and see how feasible all of this is.

Kinetic Energy = (1/2) (mass) (speed)²

      = (1/2) (1 kg) (30 m/s)²

      = (1/2) (1 kg) (900 m²/s²)

      = 450 kg-m²/s² = 450 joules .

That's the KE of the ball at the instant it leaves your hand,
moving at 30 m/s . Immediately after that, we don't know
what happens to it. It may lose speed, if you tossed it upward,
or it may gain speed, if you tossed it downward or horizontally.
As soon as its speed changes, so does its KE.

And now, a word from the real world:
' 30 m/s ' is about 67 miles per hour, and the ball weighs a little
over 2 pounds. Do you really think you could make that toss ?

Related Questions

Based on the data given, in what direction will the car accelerate? A. upward B. toward the right C. toward the left D. downward
How much force is required to accelerate a 2 kg mass at 3 m/s2
What h and n can friction produce
When atoms form a bond, it is usually because each atom acquires a more stable arrangement of electrons in its electron shells. What is the best description of this arrangement of electrons?A.All shells have the same number of electrons.B.The inner shells are empty.C.The outer shell is completely full.D.All shells are half full.
When polarizing an object, what happens to the charges in the object?A. They swirl about like bees in a hive.B. They separate, with positive charges on one side and negativecharges on the other.C. The protons drain off, leaving the object negatively charged.D. They repel each other and spread out all around the outer surface.

this chart shows characteristics of three different types of atoms. which statement is best supported by the information in the chart?

Answers

Answer:

Atom X will accept electrons from atom Y

Explanation:

The outermost shell of an atom is full when it contains 8 valence electrons (except for the first shell, which only contains 2 electrons). Therefore, any atom tends to accept electrons if it's very close to complete the shell with 8 electrons, or to donate electrons if it has only a few electrons in its outest shell.

In this case, we have:

- Atom X: 6 valence electrons --> it tends to accept electrons, since it needs only 2 of them to complete the shell

- Atom Y: 2 valence electrons --> it tends to donate electrons, so it has its outermost shell completed also

- Atom Z: 8 valence electrons --> it has no tendency in donate/accept electrons, since its outermost shell is already full

Therefore, atom Y will donate its 2 valence electrons to atom X, so that both of them have their outermost shell completed.

Answer:

Atom X will accept electrons from atom Y

Explanation:

I did the test

If you were trying to build a sound proof room, which of the following materials would you choose in order to absorb the most sound, based on the coefficient of absorption for each material

Answers

Answer: concrete

Explanation: because of the absorption

Coefficients of Absorption for Common Materials

(from Penn Foster) ⭐⭐⭐⭐⭐

Material Coefficient of Absorption

Perforated acoustic ceiling material 60%

Heavy curtains (A) 50%

Carpeting (B) 20%

Wood (C) 5%

Plaster 3%

Clay tile (D) 3%

Concrete 2%

The answer is A. Heavy curtains ✅

What is the acceleration of a softball if it has a mass of 0.5 kg and hits the cathers glove with a force of 25n

Answers

Acceleration is found if we have the force and mass.

With the following equation: F = ma, we can find the missing values.

F = 25n
M = 0.5 kg
a = ?

a = f/m
a = 25/0.5
a = 50

a = 50 m/s

So, the acceleration is 50 m/s^2

Which action will result in a product with new chemical properties?A. shredding a newspaper

B. breaking a mirror

C. cutting wood

D. popping popcorn

Thanks :)

Answers

Popping popcorn action will result in a product with new chemical properties, therefore the correct answer for the given problem is option D.

What is a chemical reaction?

In a chemical reaction, one or more components referred to as reactants—are changed into one or more other substances—also referred to as byproducts.

A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

The energy of the reactant is greater than the energy of the product because the extra energy is released during an exothermic reaction.

Popcorn would be the best choice since it would transform the pre-popped kernels into something else whereas the other options would merely change their outward look.

Thus, popping popcorn action will result in a product with new chemical properties, therefore the correct answer for the given problem is option D

Learn more about chemical reactions here,refer to the link ;

brainly.com/question/22817140

#SPJ6

the answer would be popping popcorn because while you are changing the physical appearance in the rest of the choices only popping the popcorn would turn the prepopped kernels into something else

Which are potential sources of error in the experiment?variable amounts of metal and magnetic properties of a material
holding the compass at an angle
the color of the bar magnet
unseen magnetic fields (such as from an electrical appliance)
the brand of light bulb used in the circuit
using a dead battery in the circuit

Answers

Answer: variable amounts of metal and magnetic properties of a material, holding the compass at an angle, unseen magnetic fields (such as from an electrical appliance) and, using a dead battery in the circuit

Explanation: Just did the assignment on ED.

If you weighted 130 lbs on Earth how much would you weigh on the moon?3500
21
350
130

Answers

Answer:

Explanation:

Weight on the moon is 16.5 % of weight on earth

Weight on moon = 0.165 * 130

Weight on moon = 21 lbs

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