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 .

Answers: 2

Show answers

Answers

Answer from: 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

Answer from: 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.

Answer from: Quest

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

Answer from: Quest

The objects do not reach terminal velocity there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.

Another question on Physics

Physics, 20.06.2019 18:04

The potential in a region between x = 0 and x = 6.00 m is v = a + bx, where a = 14.0 v and b = -7.30 v/m.

Answers: 3

Answer

Physics, 21.06.2019 14:00

Atransverse wave is traveling on a string stretched along the horizontal x-axis. the equation for the vertical displacement y of the string is given by y = (1.8 x 10-3)cos[π(13x - 60t)], where all quantities are in si units. what is the maximum speed of a particle of the string

Answers: 2

Answer

Physics, 21.06.2019 23:30

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

Answers: 3

Answer

Physics, 22.06.2019 05:00

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Answers: 1

Answer

You know the right answer?

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

Questions