Sports Science
A basketball rolling across the court demonstrates this type of motion.
Rotational motion
Crutches reduce the effort needed for walking because they function as this type of machine.
Lever
This branch of science helps improve sports equipment and athletic performance.
Physics
A bottle opener is classified as this simple machine.
Level
Hydraulic brakes operate using this principle.
Pascal's Principle
A sprinter running in a straight lane mainly demonstrates this type of motion.
Translational motion
A wheelchair ramp makes moving upward easier because it is what simple machine?
Inclined plane
Seat belts protect passengers by applying concepts of this field.
Physics
A bicycle combines many simple machines, making it this type of machine.
Compound machine
A person floats in a swimming pool because of this principle.
Archimedes' Principle
The faster a cyclist pedals, the greater this angular quantity.
Angular velocity (or angular speed)
A hospital wheelchair combines several simple machines. This is an example of what kind of machine?
Compound machine
An ergonomic office chair is designed mainly to improve this.
Comfort and efficiency
The main purpose of simple machines is to reduce this.
Effort (or force needed)
A hydraulic exercise machine works because pressure applied to one part of a fluid is transmitted equally throughout the fluid. This is known as _____.
Pascal's Principle
A gymnast spins faster by pulling the arms closer to the body because this angular quantity increases.
Angular velocity
The handle of a manual wheelchair is turned around an axle. Which simple machine is this?
Wheel and axle
Helmet design is an application of physics primarily for this purpose.
Safety
Adding gears to a bicycle mainly improves this.
Mechanical efficiency (or mechanical advantage)
A swimmer wearing a life jacket experiences greater upward force because of this principle.
Archimedes' Principle
The wheel of a racing bicycle and the bicycle itself move using these two types of motion simultaneously.
Rotational and translational motion
Resistance bands improve strength, but scissors used in therapy sessions represent this simple machine.
Lever
A lightweight racing bicycle increases this aspect of cycling performance.
Efficiency
A rowing machine in a gym mainly demonstrates the action of this simple machine.
Lever
Increasing the volume of air inside a flotation device mainly changes this property of the object.
Density