Question

Imagine a 15kg block moving with a speed of 20m/s. Calculate the kinetic energy of this block. (Show the equation, show your work and answer with units.)

Answer 1

The answer to your question is: Ke = 3000 Joules

Step-by-step explanation:

Data

mass = 15 kg

speed = 20 m/s

Kinetic energy = ?

Equation

`Ke = (1)/(2)mv^(2)`

`Ke = (1)/(2)(15)(20)^(2)`

Ke = 3000 Joules

Answer 2

3000 Joules

Step-by-step explanation:

Hello, I can help you with this.

the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.it is given by:

`E_(k)=(1)/(2)mv^(2)`

Step 1

all you have to do is to put the values into the equation

Let

m= 15 kg

speed=20 m/s

`E_(k)=(1)/(2)mv^(2)\\E_(k)=(1)/(2)(15kg)(20(m)/(s)) ^(2)\\E_(k)=(1)/(2)(15kg)(400)(m^(2) )/(s^(2) ) \\E_(k)=3000 kg (m^(2) )/(s^(2) )`

by definition

`1Kg(m^(2) )/(s^(2) )=1 Joule`

so, the kinetic energy of the block is 3000 Joules

I hope it helps, Have a great day.