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
Levart [38]
3 years ago
9

According to Newton’s second law of motion, the acceleration of an object equals the net force acting on the object divided by t

he object’s
a. mass.
b. weight.
c. momentum.
d. velocity.
Physics
1 answer:
liubo4ka [24]3 years ago
6 0
F = ma

F/m = a

Acceleration, a = F/m = Force / Mass

a) Mass
You might be interested in
At t=0, a train approaching a station begins decelerating from a speed of 80 mi/hr according to the acceleration function a(t)=−
vredina [299]

Answer:

a)  Δx = 49.23 mi , b)  Δx = 5.77 mi

Explanation:

As we have an acceleration function we must use the definition of kinematics

     a = dv / dt

     ∫dv = ∫ a dt

we integrate and evaluators

      v - vo = ∫ (-1280 (1 + 8t)⁻³ dt = -1280 ∫ (1+ 8t)⁻³ dt

We change variables

       1+ 8t = u

       8 dt = du

       v - v₀ = -1280 ∫ u⁻³ du / 8

       v -v₀ = -1280 / 8 (-u⁻²/2)

       v - v₀ = 80 (1+ 8t)⁻²

We evaluate between the initial t = 0 v₀ = 80 and the final instant t and v

      v- 80 = 80 [(1 + 8t)⁻² - 1]

      v = 80 (1+ 8t)⁻²

We repeat the process for defining speed is

     v = dx / dt

    dx = vdt

    x-x₀ = 80 ∫ (1-8t)⁻² dt

    x-x₀ = 80 ∫ u⁻² dt / 8

    x-x₀ = 80 (-1 / u)

    x-x₀ = -80 (1 / (1 + 8t))

We evaluate for t = 0 and x₀ and the upper point t and x

   x -x₀ = -80 [1 / (1 + 8t) - 1]

We already have the function of time displacement

a) let's calculate the position at the two points and be

t = 0 h

     x = x₀

t = 0.2 h

    x-x₀ = -80 [1 / (1 +8 02) -1]

    x-x₀ = 49.23

displacement is

  Δx = x (0.2) - x (0)

   Δx = 49.23 mi

b) in the interval t = 0.2 h at t = 0.4 h

t = 0.4h

     x- x₀ = -80 [1 / (1+ 8 0.4) -1]

     x-x₀ = 55 mi

    Δx = x (0.4) - x (0.2)

     Δx = 55 - 49.23

     Δx = 5.77 mi

3 0
3 years ago
I NEED HELP ASAP PLEASE!!!<br> (19 pts!)
zhenek [66]
They go in the boxes in this order:
density
2.meter
3.matter
4.hypothesis
5.control
6.kilogram
5 0
3 years ago
The Periodic Table Question 4 of 10 If an element forms a 2+ ion, in which group of the periodic table would you expect to find
zvonat [6]

Answer:

B is the difference قصدي لا انا اعرف بشير بس ما اعرف اخوه يعني *قصدي لا انا اعرف بشير بس ما اعرف اخوه يعني *قصدي لا انا اعرف بشير بس ما اعرف اخوه يعني *قصدي لا انا اعرف بشير بس ما اعرف اخوه يعني *قصدي لا انا اعرف بشير بس ما اعرف اخوه يعني *

3 0
2 years ago
Which sound wave features are being described?
Andre45 [30]

Answer: Sound wave can be described by five characteristics Wavelength , amplitude, time period, frequency and velocity or speed

Explanation:

6 0
3 years ago
Read 2 more answers
An object that gives off electromagnetic waves based on its temperature
My name is Ann [436]

Answer:

B) Blackbody radiation

MARK THIS AS BRAINLIEST PLEAWESSS :)

3 0
2 years ago
Other questions:
  • Reading glasses of what power are needed for a person whose near point is 125 cm , so that he can read a computer screen at 54 c
    6·1 answer
  • The electric force between two charged objects depends on which of the following
    5·2 answers
  • In a molecule of water, how many electrons are shared between each hydrogen atom and an oxygen atom? one two four
    7·2 answers
  • What is the impulse of a 131g baseball when it strikes a batter at 57 m/s
    15·1 answer
  • Why is the restoring force in Hooke's law a negative value?
    12·2 answers
  • As a wave moves through a medium, particles are displaced and (2 points)
    15·1 answer
  • Why do some organisms never turn into fossils?
    9·1 answer
  • Soccer can be traced back to the early Greeks and Romans.<br> O True<br> O False
    14·1 answer
  • If you walk at an average speed of 5 km/h for 30 minutes, how
    14·1 answer
  • A small car of mass 1200 kg traveling east at 60m/s collides at an intersection with a truck of mass 3000 kg that is traveling d
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!