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Flashcards in Chapter 7 Deck (13):
1

Newton's First Law:

An object will remain at rest or continue to with a constant velocity unless acted upon by a resultant force.

2

State Newton's Second Law:

The resultant force on an object is directly proportional to the rate of change of momentum and in the same direction.

F∝  (Change in P)

         ————————————

        (Change in t)

 

Change in P = Force × Change in time

 

 

3

Newton's Third Law:

 

Every action has an equal and opposite reaction.

4

What is the equation for the change in momentum (P)?

Change in momentum = mv - mu

Change in P = (mass × final velocity) - (mass × initial velocity)

 

If momentum is constant:

Change in P = m(v - u)

 

5

What are the FOUR fundemental forces?

Gravitational Force.

Electromagnetic Force.

Stong Nuclear Force.

Weak Nuclear Force.

6

What is the equation for MOMENTUM (P)

Momentum = Mass × Velocity

 

P = mv

 

kgms = kg × ms

7

What is THE LAW OF CONSERVATION OF MOMENTUM?

In a closed system (where no external forces are acting) the total momentum of all objects, in a specified direction, remains constant.

8

State the table of INELASTIC and ELASTIC COLLISIONS.

 

A image thumb
9

In all collisions and interactions, what is conserved in all directions?

Linear momentum

 

Momentum P1 + Momentum P2 = Overall Momentum (P)

10

What is IMPULSE?

Change in momentum.

11

How do you calculate MOMENTUM on a GRAPH?

Calculate the area underneath the graph.

12

How do you solve COLLISIONS IN TWO DIMENSIONS?

Using Vector Trianges

13