Forces

Question 0

Unbalanced forces

Answer 0

Cause an object to move, to stop moving, or to change directions

Question 1

Force-

Answer 1

A push or pull

Question 2

Net force

Answer 2

The overall force of all forces added together

Question 3

Balanced forces

Answer 3

Equal forces acting on an object in opposite directions; it won’t change the objects motion; causes zero net force

Question 4

Inertia-

Answer 4

The tendency of an object to resist change

Question 5

Newton’s first law of motion-

Answer 5

An object at rest will stay at rest and a moving object will continue to move until acted on by a force

Question 6

The greater the mass of an object the greater the __________

Answer 6

Inertia

Question 7

An unbalanced force acting on an object will change the objects _____________

Answer 7

Motion

Question 8

Mass-

Answer 8

The amount of matter in an object

Question 9

The net force on an object is equal to the product of its ___________

Answer 9

Acceleration and mass

Question 10

Newtons 2nd law of motion

Answer 10

The net force on an object is equal to the product of its acceleration and mass

Question 11

What’s the formula for force

Answer 11

F=MxA

Question 12

What’s the formula for acceleration

Answer 12

A= F/M

Question 13

What’s the formula for mass

Answer 13

M= F/A

Question 14

If you decrease the force on an object it’s acceleration __________

Answer 14

Decreases

Question 15

If you increase the mass on an object it’s acceleration _________

Answer 15

Decreases

Question 16

Newton-

Answer 16

Kgm
________
S2

Question 17

Friction

Answer 17

The force that one surface exerts on another when the two rub against each other

Question 18

The strength the force of friction depends on two factors __________

Answer 18

The type of surfaces involved and how hard the surfaces push together

Question 19

Sliding friction-

Answer 19

When solid surfaces slide over each other

Question 20

Rolling friction-

Answer 20

When an object rolls over a surface

Question 21

Fluid friction-

Answer 21

The friction that occurs when an object moves through a fluid

Question 22

Gravity-

Answer 22

The forms that pulls objects toward earth

Question 23

Free fall-

Answer 23

Occurs when only force acting on falling object is gravity

Question 24

Acceleration due to gravity is ________

Answer 24

9.8 m/s/s

Question 25

All objects in free fall accelerate at_________ rate

Answer 25

The same

Question 26

Projectile motion-

Answer 26

When an object is thrown horizontally

Question 27

Air resistance-

Answer 27

Objects falling through air have air resistance, a type of fluid friction

Question 28

Terminal velocity-

Answer 28

When a falling object can fall no faster due to air resistance that's equal to gravitational pull.

Question 29

Weight-

Answer 29

Force of gravity on an object

Question 30

Universal gravitation-

Answer 30

Force of gravity acts between all objects

Question 31

Gravity depends on................

Answer 31

Size & distance, bigger objects have more gravitational pull

Question 32

The law of universal gravitation-

Answer 32

States that the force of gravity acts between all objects in the universe

Question 33

Newtons 3rd law-

Answer 33

States that if one object exerts a force on another object then the second object exerts a force of equal strengthen in the opposite direction on the first object.

Question 34

Momentum -

Answer 34

The product of its mass and it's velocity

Question 35

What's the formula for momentum?

Answer 35

Mo= M x V

Question 36

What's the unit for measuring momentum

Answer 36

Kgm _______ S

Question 37

The more momentum an object has the ______

Answer 37

Harder it is to stop

Question 38

More mass makes an object have_______

Answer 38

More momentum

Question 39

The more velocity an object has _____________

Answer 39

The more momentum it will have

Question 40

Law of conservation of momentum

Answer 40

States that this total momentum of the objects that interact does not change

Question 41

The total momentum of any group of objects remains the same unless_________

Answer 41

Outside forces act on the objects