Motion & Speed
The total length of the path an object travels.
What is distance?
A push or pull on an object.
What is a force?
The force that pulls objects toward Earth.
What is gravity?
The energy of motion.
What is kinetic energy?
Energy cannot be created or destroyed, only changed.
What is the Law of Conservation of Energy?
The formula S=D/T is used to calculate this.
What is speed?
When forces on an object are equal and opposite.
What are balanced forces?
The formula W=mg calculates this.
What is weight?
Stored energy due to position.
What is potential energy?
The splitting of an atomic nucleus.
What is nuclear fission?
A car travels 400 m in 20 seconds. This is its speed.
What is 20 m/s?
The tendency of an object to resist changes in motion.
What is inertia?
An object with a mass of 75 kg weighs this much on Earth.
What is 735 N?
The type of potential energy stored in chemical bonds.
What is chemical potential energy?
The joining of atomic nuclei.
What is nuclear fusion?
The change in velocity over time.
What is acceleration?
If you push a heavy object and it doesn’t move, this is the net force.
What is zero?
The force that opposes motion through air.
What is air resistance?
Increasing an object’s height increases this type of energy.
What is gravitational potential energy?
The product of an object’s mass and velocity.
What is momentum?
A roller coaster goes from 4 m/s to 22 m/s in 3 seconds. This is its average acceleration.
What is 6 m/s²?
A 15‑kg box has 500 N of force applied. This is its acceleration.
What is about 33.3 m/s²?
The inward force that keeps an object moving in a circle.
What is centripetal force?
The total energy of motion and position in a system.
What is mechanical energy?
This law states that mass cannot be created or destroyed.
What is the Law of Conservation of Mass?