**Answer:**

use different energy sources

**Explanation:**

** 40kg**

**Explanation:**

Given parameters:

Kinetic energy = 500J

Velocity = 5m/s

Unknown:

Mass of the object = ?

Solution:

Kinetic energy is the energy due to motion of a body. It is expressed as:

K.E = mv²

m is the mass of the body

v is the velocity

To find the mass, make it the subject of the expression:

m = }[/tex]

m = }[/tex] =** 40kg**

Learn more:

Kinetic energy brainly.com/question/6536722

#learnwithBrainly

Answer: you'll see cyan color on the screen

Explanation:

Saturating the red cone causes them to stop functioning, hence you can't perceive the red part of white light. White light is made up of three main colors which are blue, red and green. When one can no longer perceive the red part of light, one is left with the grean and blue part. The green and blue part of light will superimpose to give a cyan color.

<h2>

**Speed of the race car at the end of the run is 97.57 m/s**</h2>

**Explanation:**

We have equation of motion v² = u² + 2as

Initial velocity, u = 0 m/s

Acceleration, a = 11.9 m/s²

Final velocity, v = ?

Displacement,s = 400 m

Substituting

v² = u² + 2as

v² = 0² + 2 x 11.9 x 400

v = 97.57 m /s

**Speed of the race car at the end of the run is 97.57 m/s**

For this case we have to by definition, according to Newton's second law that:

Where:

F: Strength

m: Mass

a: Acceleration

In this case we have to:

Where:

W: It is the weight

m: It's the dough

g: It is the acceleration of gravity

We have as data that:

So:

The mass is 1.02 kg

**Answer:**

**The mass is 1.02 kg**