Idk Flashcards
Vector
Scalar + direction. Can be added and subtracted
Plane flying 500 mph east but 100 mph winds so resultant vector is 400 mph
To find where a plane is going when it’s 500 mph north but winds are blowing 200mph easy
A2+B2=C2
How do planes use vectors
Planes use vectors to compensate wind speed
Speed =
Distance/time
Bus ride speed= 42mi/1hr
Average speed vs instantaneous speed
Average- over a longer period time
Instantaneous- at one moment
Acceleration?
Change
Velocity/time
Example - 1block per second squared
Newton’s first law
Objects in motion stay in motion and objects in rest stay at rest unless a force acts upon it
Newtons 2nd law
The force applied to an object is directly proportional to its acceleration and force required to accelerate an object is proportional to its mass f=ma
If force ghost two times a mass stays the same acceleration ghost two times up
But if for stays the same and mask goes to times up acceleration goes up one half
Newton’s third law
What is static
Example of this law
For every push there is a pull
Static is no change/forces cancel out
Shooting a gun
Scalar
Measurements that compare quantity