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Flashcards in Idk Deck (10)
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1
Q

Vector

A

Scalar + direction. Can be added and subtracted

Plane flying 500 mph east but 100 mph winds so resultant vector is 400 mph

2
Q

To find where a plane is going when it’s 500 mph north but winds are blowing 200mph easy

A

A2+B2=C2

3
Q

How do planes use vectors

A

Planes use vectors to compensate wind speed

4
Q

Speed =

A

Distance/time

Bus ride speed= 42mi/1hr

5
Q

Average speed vs instantaneous speed

A

Average- over a longer period time

Instantaneous- at one moment

6
Q

Acceleration?

A

Change
Velocity/time
Example - 1block per second squared

7
Q

Newton’s first law

A

Objects in motion stay in motion and objects in rest stay at rest unless a force acts upon it

8
Q

Newtons 2nd law

A

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

9
Q

Newton’s third law
What is static
Example of this law

A

For every push there is a pull
Static is no change/forces cancel out
Shooting a gun

10
Q

Scalar

A

Measurements that compare quantity