Physics, 01.12.2020 23:00 meganwintergirl

Which of the following cars have the most kinetic energy

Answers: 3

Show answers

Answers

Answer from: pancho99

Hey There!_____________________________________

$\huge\boxed{OptionA}$

_____________________________________DATA:Blue Car:

mass = 4 kg

velocity = 5 m/s^2

Orange truck:

Mass= 2kg

Velocity = 7m/s^2

Grey Car:

mass = 6 kg

velocity = 4m/s^2

Green Car:

Mass = 8 kg

Velocity = 3 m/s^2

_____________________________________SOLUTION:

By the equation of kinetic energy,

K.E = $\frac{1}{2} mv^2$

Where,

K.E is kinetic energy

m is mass

v is velocity

_____________________________________Kinetic energy of Blue car:

Directly substitute the variables in the equation,

K.E = $\frac{1}{2}x4x5^2$

Simplify the equation,

K.E = 50 J

_____________________________________Kinetic Energy of Silver Car:

Directly substitude the variable in the equation,

K.E = $\frac{1}{2}x6x4^2$

Simplify the equation,

K.E = 48J

_____________________________________Kinetic Energy of Green Car:

Substitute the variables in the equation,

K.E = $\frac{1}{2}x8x3^2$

Simplify the Equation,

K.E = 36J

_____________________________________Kinetic Energy of Orange Truck:

Substitute the variable,

K.E = $\frac{1}{2}x 2x7^2$

Simplify the equation,

K.E = 49J

_____________________________________

As you can see that the highest value of kinetic energy is of Blue SUV thus it will be out answer.

_____________________________________Best Regards,'Borz'

Answer from: Quest

heats surface water up

Answer from: Quest

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

Another question on Physics

Physics, 22.06.2019 09:40

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

Answers: 1

Answer

Physics, 22.06.2019 13:20

Arrange the images in order to show how lake-effect snow occurs.

Answers: 2

Answer

Physics, 22.06.2019 13:40

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Answers: 1

Answer

Physics, 22.06.2019 14:00

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Answers: 1

Answer

You know the right answer?

Which of the following cars have the most kinetic energy
...

Questions