physics and motion
Galileo´s law
law of falling bodies
push or pull exerted of the object
what is weight
force download ona object
acceleration is
Acceleration is the change in velocity over time.
what does it tell
Velocity tells how fast something is moving and in what direction.
study of phyics
laws of motion
force measured in what unit
newtons
what is gravity
a force that pulls objects towardone another
an object can
An object can accelerate by speeding up, slowing down, or changing direction.
velocity is
city is a vector, which means direction matters.
issaic newton's laws
universal gravitation and three laws of motion
two types of forces
friction and gravity
what is mass
total of matter
acceleration is scalar of vector
Acceleration is a vector, so it has both size and direction.
unit for this
The usual unit for velocity is meters per second, or m/s.
newton's laws of motion
an object at rest stays at rest
acceleration depends on force
what is net force
the forces acting on an object
chris throws a baseball 60 meters in 4 second what is its top speed
15m/s
what is its unit
Its common unit is meters per second squared, or m/s2m/s2
speed and velocity are
Speed and velocity are not the same: speed has no direction, but velocity does.
formulas of speed time and distance
speed dxt
time d/v
distance sxt
balanced and unbalcnced
balanced two equal forces pushing and pulling
unbalanced always cause change in motion
run at 12m/s for 15 minutes how far do you go
10800m
if velocity does not change
If an object’s velocity does not change, its acceleration is zero.
if direction changes
If direction changes, velocity changes even if speed stays the same.