Physics, 19.10.2019 17:30, xxtonixwilsonxx

Which statements about acceleration are true? check all that apply. a. the si units of acceleration are m/s2. b. for acceleration, you must have a number, a unit, and a direction. c. to calculate acceleration, divide the change in speed by the change in time. d. the symbol for acceleration is .

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answered: noeminm105

The first thing you should know is that acceleration is a vector, therefore, it has magnitude, and direction.

By definition, we have that the vector acceleration is given by:

$a = \frac{dv}{dt}\\$

Where,

dv/dt: derived from the velocity vector with respect to time,

Therefore, the units of the vector acceleration are:

$a = \frac{\frac{m}{s}}{s}\\$

$a = \frac{m}{s^2}$

The symbol of acceleration is:

$a^{-}$

The statements about acceleration that are true are:

a. the si units of acceleration are m/s2.

b. for acceleration, you must have a number, a unit, and a direction.

d. the symbol for acceleration is (True, only if the symbol is the same as above)

Which statements about acceleration are true? check all that apply. a. the si units of acceleration

answered: pedroramirezr2

A is True:

The formula for acceleration is:

$Acceleration = \frac{Vf-Vi}{t}$
$Acceleration = \frac{Xm/s-Xm/s}{s} = Xm/s^{2}$

Because the unit of velocity is m/s and the unit of time is second this is what happened:

$\frac{m}{s}$ ÷ $\frac{s}{1}$

$\frac{m}{s}$ ÷X $\frac{1}{s}$ = $\frac{m}{s^{2}}$

B is True:

Acceleration is a vector quantity, so that means it should have both magnitude and direction. When given an acceleration, the sign usually indicates the direction. A negative value is a sign that it is decelerating and not accelerating.

D could be true only if:

Your question is actually broken so we do not know the symbol you are showing. But in general, the symbol of acceleration is a letter "a" with an arrow on top. You can see in the picture attached to see the symbol I am referring to.

C is not true because acceleration is the change in VELOCITY over time. Velocity and speed are different.

answered: Guest

Where is the diagram? you need to be more specific in your question so we can you

answered: Guest

distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

slope of a graph = change in value of y -axis / change in values of x -axis

comparing both the equations

change in value of y -axis = change in position

change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

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Which statements about acceleration are true? check all that apply. a. the si units of acceleration...