Dynamics

Question 1

What to do when finding net force with magnitude and direction?

Answer 1

Trig. Find c and angle of direction.

Question 2

What is inertia?

Answer 2

The property of matter that resists change to its motion. The greater the mass, the greater the inertia.

Question 3

What are the four fundamental forces? (In order of weak to strong)

Answer 3

Gravitational, Electromagnetic, Weak Nuclear, Strong Nuclear forces.

Question 4

What happens to force experienced by two objects when you change the distance? (ie. 1/2, 2x)

Answer 4

When changing distance remember: it becomes 1/(x^2) as big.

Question 5

What happens to force when masses are changed?

Answer 5

It would change normally. Ex. If both masses were doubled, it would be 4x as big, 2x2=4.

Question 6

Gravitational Field Strength formula

Answer 6

g= GM / r^2

Question 7

Function of strong nuclear force

Answer 7

Holds protons and neutrons together.

Question 8

Function of weak nuclear force

Answer 8

Involved in radioactive decay.

Question 9

Function of electromagnetic force

Answer 9

Holds positive and negative atoms and molecules together/apart

Question 10

Function of gravitational force

Answer 10

Force of attraction between all objects with mass.