$$\rightleftharpoonup{xx}$$
$$\longleftharp{xx}$$,
$$\longrightharp{xx}$$,
Newton’s Second Law of Motion explains the relationship between force, mass, and acceleration. It states that a body's acceleration is determined by the net force acting on it, divided by its mass.
Let’s take Zeke on his skateboard as an example. Together, they have a total mass of 60 kg. If he pushes off the ground, generating a net force of 120 newtons, his acceleration is found by dividing the force by mass: 120 divided by 60, which equals 2 m/s².
If his acceleration drops to 0.5 m/s², the new force needed to maintain this motion can be calculated by multiplying the mass by acceleration: 60 kg times 0.5 m/s², which equals 30 newtons.
This means less force acts on Zeke and his skateboard, so he moves slower.
The unit of force, the newton, is expressed as kilogram·m/s². So, 30 newtons is also 30 kilogram·m/s².
These relationships apply to everyday life, from pushing a cart in the grocery store to launching a rocket.
