When a ball drops from the roof of a building, it speeds up as it falls. what energy transformation is happening?

a. gravitational potential energy to kinetic energy
b. kinetic energy to gravitational potential energy
c. light energy to sound energy
d. gravitational potential energy to nuclear energy

As initial position of the ball is upwards and at some height above the surface of Earth

so here we can say that initial total energy of the ball is in the form of gravitational potential energy

this is given by equation

here we know that

h = initial height of the ball from ground

now again we know that ball is released from rest from that initial height and it continue from this position

As it start falling down the speed of the ball will increase due to gravity so here we can say that as ball go down its kinetic energy will increase

so here correct answer for energy transform is

A. Gravitational potential energy to kinetic energy

The answer is A. Gravitational potential energy to kinetic energy

First, the ball is experimenting gravitational potential energy since it hasn´t been dropped.

Then, the gravitational energy turns into kinetic energy. The ball gains speed because of the acting of the gravity acceleration which is equal to . But, what does it that means? It means that every second while the ball is falling, its velocity will increase at a speed rate of

The gravitational potential energy is equal to:

Where

The kinetic energy is equal to

Where:

Have a nice day!

true

explanation:

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz