Vocab 1
What is a push or pull exerted on an object
force
Force equals mass times acceleration
Newton's Law 1, 2, or 3
Newton's second law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force
Newton's First Law of Motion
Force= mass x ________________
speed
acceleration
friction
acceleration
The rate at which velocity changes
velocity
acceleartion
speed
acceleration
What are equal forces acting on one object in opposite directions?
balanced force
For every action, there is an equal and opposite reaction
Newton's Third Law
What is "Law of ____________ also known as Newton's first law? The tendency of an object to resist any change in its motion. Increases as the mass increases.
tendency of an object to resist any change in its motion
increases as mass increases
Law of Inertia
What does Newton's Second Law State?
Force=
Force=Mass x acceleration
When one object exerts a force on a second object, the second object exerts an equal but opposite force on the first.
or
For every action, there is an equal and opposite reaction
Newton's Third Law
forces acting on an object that have a net force that is
unbalanced force
A force of attraction due to their masses
gravity
An object will not change its ___________ unless acted upon by an ___________ ________________
motion
unbalanced force
Force is measured in______. A ________ is abbreviated by an ____
Newtons Newton N
Small mass ⇒ more acceleration
Large mass ⇒ less acceleration
The sum of all forces acting on an object
net force
The tendency of an object to resist change
inertia
Objects with greater____________ have more inertia
matter
mass
weight
mass
What force would be required to accelerate a 60 kg mass by 2 m/s2
120 N
A football is thrown with 30 N of force and has an acceleration of 24 m/s2. What is the football’s mass?
Remember: m = F ÷ a
m = 30 N ÷ 24 m/s2
m = 1.25 kg
Which law of Newton is- an object at rest remains at rest and an object in motion remains in motion with the same speed and direction unless acted upon by an outside force.
Newton's First Law
fluid friction acting on an object through the air
air resistance
the force that opposes motion between 2 surfaces
depends on the: types of surfaces and the force between the surfaces
is it inertia, gravity, or friction
friction
The formula for acceleration=force/mass. A 6.0 kg shotput is thrown with 30 N of force. What is its acceleration?
5 m/s/s
How can a horse
pull a cart if the cart
is pulling back on
the horse with an equal but opposite force?
forces are equal and opposite but act on different objects
they are not “balanced forces”
the movement of the horse depends on the forces acting on the horse