Answer:
I'm not taking physics right now but I would love too.
Explanation:
The net force acting on the two (2) kids is equal to 180 Newton.
<u>Given the following data:</u>
- Mass of kid 1 = 40 kilogram.
- Mass of kid 2 = 50 kilogram.
- Acceleration = 2

To determine the net force acting on the two (2) kids:
First of all, we would calculate the total mass of the two (2) kids:

Total mass = 90 kg.
<h3>
How to calculate net force.</h3>
In this exercise, you're required to calculate the magnitude of the net force that is acting on these two (2) kids running down the hall. Thus, we would apply Newton's Second Law of Motion.
Mathematically, Newton's Second Law of Motion is given by this formula;

Substituting the given parameters into the formula, we have;

Net force = 180 Newton.
Read more on acceleration here: brainly.com/question/1121817
Answer:
0.58 J
Explanation:
We know that Total energy is conserved.
Initial Kinetic energy + Initial potential energy = final kinetic energy+ final potential energy + dissipated heat energy
Initial kinetic energy = 0 ( magnet is at rest initially)
Initial Potential energy = m g h = (0.20 kg)(9.81 m/s²)(0.35 m) = 0.69 J
Final kinetic energy = 0.5 m v² = 0.5 ×0.20 kg × 1.10 m/s = 0.11 J
Final potential energy = 0
∴ Dissipated heat energy = (0.69 -0.11) J = 0.58 J
The basic building blocks are called atoms