HESI A2 Physics
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HESI A2 Physics
1. Average speed The distance an object travels divided by the time the object travels without regard
to direction of travel.
V av=d/t
V av= average speed
d= distance
t= time
2. Velocity Speed in a specific direction
Vector quantity and must be expressed in both units of magnitude and direction
of motion.
3. vector quantity quantity describing the time rate of change of an object's position
4. Average velocity V av = Vf + Vi
--------
2
5. Acceleration the rate of change in velocity over a period of time.
Vector quantity
Expressed in terms of magnitude and direction
Change in velocity
----------------------
Change in time
6. Projectile motion Display two types of motion simultaneously
dx= Vxt
, HESI A2 Physics
Study online at https://quizlet.com/_4z5gdd
HESI A2 Physics
dx- horizontal distance
Vx- a function of velocity
t-time
7. Vertical motion d= 1/2 at^2 + Vit
8. Force a push or pull on an objet
9. Newton's first law A body at rest will remain at rest, and a body in motion will remain in motion with
of motion a constant velocity, unless acted on by an unbalanced force.
10. Newton's second an unbalanced force will cause acceleration, and this acceleration is directly pro-
law portional the the unbalanced force.
F=k(or m)a
F-force
k- the content of proportionality= the mass of the object
a-acceleration
If the mass is expressed in kilograms and the acceleration is expressed in meters
per second squared, the unit of force is referred to as Newton (N) and is equal to
the force necessary to accelerate a mass on one kilogram one meter per second
per second
w=mg
11. Gravity 9.8 m/ sec squared
12. Newton's Third For every action there must be an equal and opposite reaction
Law of Motion
13. Friction
Study online at https://quizlet.com/_4z5gdd
HESI A2 Physics
1. Average speed The distance an object travels divided by the time the object travels without regard
to direction of travel.
V av=d/t
V av= average speed
d= distance
t= time
2. Velocity Speed in a specific direction
Vector quantity and must be expressed in both units of magnitude and direction
of motion.
3. vector quantity quantity describing the time rate of change of an object's position
4. Average velocity V av = Vf + Vi
--------
2
5. Acceleration the rate of change in velocity over a period of time.
Vector quantity
Expressed in terms of magnitude and direction
Change in velocity
----------------------
Change in time
6. Projectile motion Display two types of motion simultaneously
dx= Vxt
, HESI A2 Physics
Study online at https://quizlet.com/_4z5gdd
HESI A2 Physics
dx- horizontal distance
Vx- a function of velocity
t-time
7. Vertical motion d= 1/2 at^2 + Vit
8. Force a push or pull on an objet
9. Newton's first law A body at rest will remain at rest, and a body in motion will remain in motion with
of motion a constant velocity, unless acted on by an unbalanced force.
10. Newton's second an unbalanced force will cause acceleration, and this acceleration is directly pro-
law portional the the unbalanced force.
F=k(or m)a
F-force
k- the content of proportionality= the mass of the object
a-acceleration
If the mass is expressed in kilograms and the acceleration is expressed in meters
per second squared, the unit of force is referred to as Newton (N) and is equal to
the force necessary to accelerate a mass on one kilogram one meter per second
per second
w=mg
11. Gravity 9.8 m/ sec squared
12. Newton's Third For every action there must be an equal and opposite reaction
Law of Motion
13. Friction
