CH.1 Kinematics Flashcards

1
Q

What is the unit and symbol for distance?

A

Unit: Meter (m), Symbol: d

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2
Q

What is the unit and symbol for Time?

A

Unit: seconds (s), Symbol: t

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3
Q

Reference Frame

A

Lets us define where an object is located, relative to other object

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4
Q

The X-axis represents

A

One Dimension

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5
Q

The X and Y axis represent

A

two dimensions

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6
Q

Displacement

A

Describes how far you are from where you started, regardless of how you got there

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7
Q

Delta (triangle)

A

represents change

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8
Q

What is the equation used to calculate Displacement?

A

deltax= Xf-Xo

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9
Q

The measure of distance must always be _, while the measure of displacement can be _ or _

A

Distance= always positive, Displacement= positive/negative

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10
Q

Scalar

A

a quantity that has only a magnitude (number)

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11
Q

Vector

A

a quantity that has both a magnitude and direction

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12
Q

Time, Distance, and Speed are examples of

A

Scalar

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13
Q

Displacement is an example of

A

a vector

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14
Q

speed

A

the distance traveled divided by the time it took to travel that distance

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15
Q

What is the equation to find speed?

A

speed= distance/time

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16
Q

what are the units associated with speed?

A

meters/seconds

17
Q

what is the average speed formula?

A

Same as speed, just with bar over top of the ā€œsā€

18
Q

Velocity

A

a vector (magnitude + direction), not the same as speed

19
Q

What is the equation for velocity?

A

V= deltax/ deltat or Xf-Xi/Tf-Ti or displacement/time

20
Q

delta (triangle) means

21
Q

acceleration

A

the rate of change of velocity

22
Q

Velocity is the rate of change of

A

displacement

23
Q

What is the equation for acceleration?

A

A= deltav/ deltat

24
Q

Acceleration is a _ (vector/scalar)

25
What are the units for acceleration?
m/s^2
26
Explain Kinematics Equation 1: Vx= Vxo + Axt
Vx= final velocity, Vxo= initial velocity, Ax= acceleration, T= time
27
What is free fall?
when the only force acting on an object is the force of gravity
28
What is acceleration due to gravity?
when an unsupported object falls towards Earth, always has the same acceleration
29
Acceleration due to gravity=
-9.8 m/s^2
30
Velocity changes but _ will always stay the same
acceleration
31
Explain the path of a ball thrown in the air
starts with an initial velocity of 0, slows down, stops momentarily at the top, speeds up, and returns with a velocity of 0