Studied by 22 people

5.0(1)

Get a hint

Hint

1

Weight

the force of weight acting on an object (N) (will change depending on the acceleration due to gravity)

New cards

2

Mass

The amount of matter in the object. (kg)

New cards

3

Inertia

an object ability to resit change in motion (the more it resists motion the higher the inertia is)

New cards

4

Force (propbly not on test)

A push or pull on an object.

New cards

5

newtons First Law

(the law of inertia) an object in motion will maintain its motion if no external forces are upon it.

New cards

6

Second Law of Newton

an object acceleration is proportional to the net force divided by the mass (a=fnet/m)

New cards

7

Third Law

(the law of force pairs),every force is an interaction between 2 objects so forces come in pairs and will have the same magnitude but different direction.

New cards

8

what is friction caused by?

Microscopic welds created by inter-molecular forces.

New cards

9

why is it important to were your seat-belt?

It is important to wear your seatbelt because in a

collision the car stops but you keep moving

unless there is a force to stop you.

New cards

10

what Galileos law of falling

if air resistance is negligible than any two objects that are dropped together will fall together regardless of there mass, shape, and material.

New cards

11

what is gravity

an attractive force that pull objects closer together as well as a at distance force.

New cards

12

what is terminal velocity

when an object no longer accelerates towards the ground and remains at a constant velocity. The downward and upward forces of gravity will balance each other (the cats jumping out of the building) (only happen if air resistance is lager enough)

New cards

13

what does at distance mean?

the forces are always pulling each other closer together

New cards

14

what is acceleration due to gravity?

the acceleration an object has from the gravitational pull of the earth (g)

New cards

15

what is force of gravity?

the force that acts between 2 objects depending on there mass and distance (G)

New cards

16

what is equilibrium?

all forces being balanced (NO ACCELERATION ALLOWED)

New cards

17

what is the normal force

an equal but opposite force keeping it from accelerating.

New cards

18

what is the coefficient of friction

a value that shows the relation ship between the force of friction and the normal between 2 objects/surfaces

New cards

19

what is friction

the amount of force needed for something to move, The force that resists motion.

New cards

20

why can an AStronaut propel themselves in a direction by throwing an object in the opposite direction? (newtons 3rd law)

Because the astronaut is exerting a force on an object to go in a certain direction and that object is existing that same force on the AStronaut but in the opposite direction.

New cards

21

how can you escape a bull by running in a zigzag line (use inertia)

Since the bull is bigger then you, the bull would have a higher inertia . Because of this it wouldn’t be able to slow down and speed up when needed to turn since it has a higher resistance of change in motion. This slows the bull down overall and allows you to escape

New cards

22

what equation is used when finding **gravitational field strength or acceleration due to gravity**?

g= Fnet/M or g=Gmr^{2}

New cards

23

what equation is used when finding **acceleration?**

a= Fnet/m

New cards

24

what equation is used when finding **mass**

m=Fent/a

New cards

25

what equation is used when finding **weight or gravitational force**

Fent= ma

New cards

26

what equation is used when finding **friction force?**

Ff=mewFn

New cards

27

what equation is used when finding **normal force?**

Fnet = ma

Fg + Fn = ma

(if Fn = Fg, then a = 0, if Fn is greater then Fg, then a = up)

New cards

28

what equation is used when finding **coefficient of friction (mew)**

mew=ff/fn

New cards