1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ugo [173]
3 years ago
10

When talking about Acceleration ,what is significant about the about the sign(+ or -)?​

Physics
1 answer:
OLEGan [10]3 years ago
5 0

Answer:

Acceleration at its most basic is the act of increasing your running speed. From a standing start (or blocks), you explode into action. If you’re already running, you pick up the pace. Acceleration continues until you can no longer increase your speed, at which point you achieve maximum velocity (top-end speed). Acceleration seems simple enough. The plus means your increasing speed, the k=minus means your decreasing in speed.

Explanation:

You might be interested in
Show your workikkkkkkkk
Svet_ta [14]

Answer:

Explanation:

F = ma

<u>Assuming</u> the 20° is angle θ measured to the horizontal

mgsinθ - μmgcosθ = ma

g(sinθ - μcosθ) = a

at constant velocity, a = 0

g(sinθ - μcosθ) = 0

   sinθ - μcosθ = 0

                 sinθ = μcosθ

μ = sinθ/cosθ

μ = tanθ

μ = tan20

μ = 0.3639702342...

μ = 0.36

6 0
2 years ago
Consider another special case in which the inclined plane is vertical (θ=π/2). In this case, for what value of m1 would the acce
Lana71 [14]

Answer:

Explanation:

Consider another special case in which the inclined plane is vertical (θ=π/2). In this case, for what value of m1 would the acceleration of the two blocks be equal to zero

F - Force

T = Tension

m = mass

a = acceleration

g = gravitational force

Let the  given Normal on block 2 = N

and N = m_2 g \cos \theta

and the tension in the given string is said to be T = m_2 g \sin \theta

When the acceleration a=\frac{F}{m_1}

for the said block 1.

It will definite be zero only when Force is zero , F=0.

Here by Force, F

I refer net force on block 1.

Now we know

F = m_1g-T.

It is known that if the said

\theta=\frac{\pi}{2} ,

then Tension T= m_2g [since \sin(\pi/2) = 1],

Now making "F = m_1g - m_2g"

So If we are to make Force equal to zero

F=0 => m_1g = m_2g \ or \ m_1 = m_2

6 0
3 years ago
Studies have shown that driving after drug use was more common among drivers who were
Vesnalui [34]
Killed in accident or injured
5 0
3 years ago
Please help.... please guys
Leto [7]

Answer:

unlike poles attract while liked poles repel

Explanation:

These two bar magnet will move away from each other

7 0
2 years ago
What does a cell use to eliminate a substance that is too large to leave by diffusion?
zysi [14]
<span>a cell eliminates endocytosis.

</span>
6 0
3 years ago
Other questions:
  • A cylindrical block of mass M=50kg and height h=0.2m is hanging on a rope and is in equilibrium. Any difference in atmospheric p
    7·2 answers
  • A 4 kg bird has 18 joules of kinetic energy and is rolling 3 m/s. find the mass ?
    10·1 answer
  • A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 79.6 m/s at ground level.
    11·1 answer
  • 568 muons were counted by a detector on the top of Mount Washington in a one hour period of time. Assuming moving muons keep tim
    8·2 answers
  • An object with a temperature of 0 Kelvin would not emit radiation.<br> a. True<br> b. False
    12·2 answers
  • A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 839 N. As the eleva
    8·1 answer
  • A particle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. Find (a
    7·1 answer
  • Why were early solar panels not popular
    8·1 answer
  • The depth of a pond is 1.5m. Calculate the pressure caused by the water at the bottom of the pond ?​?​
    6·1 answer
  • To investigate how the vertical height and horizontal distance travelled by a table tennis ball is affected by the surface with
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!