Idec

Question 1

Centripetal force vs centrifugal

Answer 1

Centripetal force is center seeking while centrifugal is center fleeing centripetal gravity goes from the earth to the sun but centrifugal goes away from the sun

Question 2

What is geosynchronous orbit

Answer 2

It’s one altitude in space that if you put a satellite there it’ll orbit with the earth (22,300miles)

Question 3

Explain friction and the 2 types

Answer 3

Friction is when things rub together
Kinetic friction is motion
Static friction is 2 objects in a gravity environment preventing them from moving
It’s proportional to mass

Question 4

Explain work

Answer 4

Work=force(distance)

The moment something stops moving there is no work being done

Question 5

Power

Answer 5

Power=work divided by time

How quickly something is being accomplished

Question 6

Momentum

Answer 6

Momentum = mass x velocity

Always conserved and converted into heat energy

Question 7

Elastic vs Inelastic

Answer 7

Elastic is when momentum is transferred to another object with no structural damage but Inelastic causes structural damage

Question 8

6 simple machines

Answer 8

Lever, wheel and axel, wedge, incline plans, screw, and pulley

Question 9

Fulcrum

Answer 9

Pivot point

Question 10

3 types of levers

Answer 10

Type 1 fulcrum is middle
Type 2 output is middle
Type 3 input is middle

Question 11

Pulley/weight experiment

Answer 11

Holding the weight straight up equals 1000 pounds but when you put it on the ramp now You have twice the distance now it’s only half of the force so now the weigh is 500
The more staighten up the ramp is, the closer to 1000 you are
force x distance = force x distance (1,000x1=500x2)

Question 12

Drop rock example

Answer 12

If you drop a rock and count seconds each second it falls about 5 m from 0 to 1 it falls 5 m total from 0 to 2 it falls 15 from 0 to 3 it is 25 if you add those you get 45