Distance and Displacement
What two things do you need to know to describe the motion of an object?
Relative Motion, frame of reference
What is a force?
Push or pull acting on an object
When is work done?
When a force acts on an object in the direction the object moves.
What is energy?
Ability to do work
What is the 3rd farthest planet from the Sun?
What is frame of reference?
System of objects that are not moving with respect to one another.
What is the overall force acting on an object after all forces are combined?
Formula for work
What is kinetic energy?
Energy of motion
How far is the earth from the sun?
1AU
What is movement in relation to a frame of reference?
Relative motion
What are the 3 types of frictions?
Rolling, Static, Sliding
What is power?
Rate of doing work
Kinetic energy formula
1/2 x mass x speed(squared)
How far is 1AU?
150 million km
What is distance?
Length of a path between two poinst
What is gravity?
Attractive force that pulls objects together.
How can you increase power?
Increase the amount of work done in a given time or do a given amount of work in less time.
What is potential energy?
Stored energy
If you weighed 68kg on earth, how much would you weigh on Jupiter?
159kg
What is a vector?
What is projectile motion?
Curved path caused by the combination of an initial forward velocity and the downward force of gravity
Power formula
Work/Time or Force times Distance/Time
Potential energy formula
mass x gravity x height
How long does it take the moon to orbit the earth?
About a month