Science Recitation 21-24 Flashcards
What is the formula for calculating the area of a rectangle?
Area equals length times width
What is the formula for calculating the volume of a right rectangular solid?
Volume equals length times width times height
What is the formula for calculating the area of a circle?
Area equals pi are squared
What is the formula for calculating the volume of a cylinder?
Volume equals pi R squared H
What is a force?
A force is a push or pull having both magnitude and direction
What is a simple machine?
A simple machine is a mechanical device that changes the magnitude or direction of a force
List the simple machines
Wheel and axle, screw, pulley, wedge, inclined plane, and lever
What is the velocity of an object?
The velocity of an object is at speed and direction
What is the acceleration of an object?
The acceleration of an object is the rate at which is velocity changes
Who determined that all falling object accelerate at the same rate?
Galileo Galilei
State newtons first law of motion
An object at rest remains at rest and an object in motion remains in motion unless acted upon by a force
Summarize newton second law of motion
Force equals mass times acceleration
State newtons third law of motion
For every action there is an equal an opposite reaction
