# data[].attributes.body
1_Define kinetic energy.

2_What are the factors that effect on kinetic energy?

3_Which car has more kinetic energy of they are moving with the same speed ?and why?

# data[].attributes.body
1.The wrecking ball's potential energy (PE) is converted into kinetic energy (KE) as it falls. The crane initially converts chemical energy (fuel) into mechanical energy to lift the ball, storing PE. 2.Energy transformations in the wrecking ball. Chemical energy (fuel) to Mechanical energy (crane operation) to Potential energy (wrecking ball at height) to Kinetic energy (wrecking ball falling) to Sound energy (impact) + Heat energy (impact) By MOHAMMED AHMED ALLEITHY

# data[].attributes.headline
Conclude the energy conservation in the opposite car that depends on fuel as a source of energy (record a sound at least 1 minute or draw the conservation of energy )

# data[].attributes.subject
Conclude the energy conservation in the opposite car that depends on fuel as a source of energy (record a sound at least 1 minute or draw the conservation of energy )

# data[].attributes.body
I'm so grateful to have the most wonderful and eager to learn students at the school!

# data[].attributes.body
The bigger one because it takes more energy to move it

# data[].attributes.attachment_link.title
Energy | The Dr. Binocs Show | Educational Videos For Kids

# data[].attributes.body
A car has a mass of 500 kg and is moving at a speed of 20 m/s.

1.  Calculate the kinetic energy of the car.

2.  If the car speeds up to 10m/s, what will be its new kinetic energy?

Formulas to Use:

The formula for kinetic energy (KE) is:

KE=1/2×m×V²

KE = kinetic energy (in joules)

m = mass (in kilograms)

V = speed (in meters per second)

# data[].attributes.headline
1/2 times 500kg times 20 at the power of 2. = 100000 joules 

# data[].attributes.subject
1/2 times 500kg times 20 at the power of 2. = 100000 joules 

# data[].attributes.body
1/2 times 50kg times 30 at the power of 2. = 225000

# data[].attributes.body
At 20 m/s, the car's kinetic energy is 100,000 J.

At 10 m/s, the car's kinetic energy is 25,000 J.

Since kinetic energy depends on the square of the speed, reducing speed from 20 m/s to 10 m/s (cutting speed in half) reduces kinetic energy by a factor of 4.

# data[].attributes.body
KE = (1/2) m V 2

KE1 = (1/2) 500 kg (20 m/s)2 KE1 = (1/2) 500 kg 400 m2/s2 KE1 = 100,000 Joules (J)

The initial kinetic energy of the car is 100,000 Joules.

If the car speeds up to 30 m/s (not 10 m/s), its new kinetic energy will be 225,000 Joules.

# data[].attributes.body
My homework Mohammed Ahmed Alleithy

# data[].attributes.body
A car has a mass of 500 kg and is moving at a speed of 20m/s.

Calculation:

1/2 x 500 kg x 20m/s to the power of 2.

= 1/2 x 500 kg x 400m/s

= 250 x 400m/s

= 100,000 Joules

If the car had the speed 10m/s:

1/2 x 500 kg x 10m/s

= 1/2 x 500 kg x 100m/s

= 250 x 100m/s

= 25,000

# data[].attributes.body
Sorry in the beginning i said ke= 0.5 x mass x speed. Only i forgot to say to the power of. But don’t worry I didn’t forget it in the rest of the voice note.

# data[].attributes.body
1-In wrecking ball an evidence for law of conservation of energy.Mention energy transformations in it.

2-Plants carry out photosynthesis process and achieve the law of conseravtion of energy.Mention energy transformations in it.

# data[].attributes.body
1.The wrecking ball's potential energy (PE) is converted into kinetic energy (KE) as it falls. The crane initially converts chemical energy (fuel) into mechanical energy to lift the ball, storing PE. 2.Energy transformations in the wrecking ball. Chemical energy (fuel) to Mechanical energy (crane operation) to Potential energy (wrecking ball at height) to Kinetic energy (wrecking ball falling) to Sound energy (impact) + Heat energy (impact) By MOHAMMED AHMED ALLEITHY

# data[].attributes.headline
Compare bewteeen different types of heat transfer

# data[].attributes.subject
Compare bewteeen different types of heat transfer