Motion Flashcards
(22 cards)
What is a Scalar
A quantity that is completely described by stating its magnitude (size).
What is a vector?
A quantity that is completely described by stating its magnitude and direction.
What is Distance?
The total length of a path.
What is displacement?
Displacement is the direct is the length from the starting point to the finishing point.
What is the equation for speed?
Speed = distance / time
What is the equation for velocity?
Velocity = displacement / time
Name 5 Vectors used in the course.
- Displacement
- Velocity
- Acceleration
- Force
- Impulse
Name 5 scalars used in the course.
- Distance
- Speed
- Time
- Mass
- Energy
What does “u” stand for?
The initial velocity of the object, measured in ms^-1
What does “v” stand for?
The final velocity of the object, measured in ms^-1.
What does “a” stand for?
The acceleration of the object, measured in ms^-2
What does “s” stand for?
The displacement of the object, measured in m.
What does “t” stand for?
Is the time for which the motion takes place, measured in s.
Equation for final velocity given:
- initial velocity
- acceleration
- time
v = u + at
Equation for displacement given:
- initial velocity
- acceleration
- time
s = ut + 1/2at^2
What is the Equation for displacement given:
- final velocity
- acceleration
- time
s = vt - 1/2at^2
Equation for final velocity given:
- initial velocity
- acceleration
- displacement
v^2 = u^2 + 2as
Equation for displacement given:
- initial velocity
- final velocity
- time
s = 1/2(u + v)t
What is the acceleration of falling objects?
9.8ms^-2
What does the gradient of a displacement-time graph show?
The velocity of motion.
What does the area under the velocity-time graph show?
The displacement.
What does the gradient of the velocity-time graph show?
The acceleration.
