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
ohaa [14]
3 years ago
15

What is the acceleration of a car that starts from rest and attains a final speed of 20 m

Physics
1 answer:
OlgaM077 [116]3 years ago
3 0

Answer:

323.9

Explanation:

You might be interested in
The relationship between the decay constant (λ) and the half-life (t1⁄2) is given by the equation t(1/2) = 0.693/λ. Use the equa
pshichka [43]

Answer: A: 70/2=35

B: 35/2=17

C: 17.5/2=8.75

D: 8.75 of C-14 will be left

E: 5,730 years

F: 5,631

Explanation:

that’s all I got, hope I helped kinda

6 0
2 years ago
I beggggg youu to solve this for me, I'm giving you 60 POINTS !!!
djyliett [7]

Answer:

but where is the question ?

Explanation:

<em>hope</em><em> it</em><em> </em><em>works</em><em> out</em>

6 0
2 years ago
Read 2 more answers
A 90 kg ice skater moving at 12.0 m/s on the ice encounters a region of roughed up ice with a coefficient of kinetic friction of
balandron [24]

Answer:

The skater covers a distance of <u>15 m</u> before stopping.

Explanation:

Let the distance traveled before stopping be 'd' m.

Given:

Mass of the skater (m) = 90 kg

Initial velocity of the skater (u) = 12.0 m/s

Final velocity of the skater (v) = 0 m/s (Stops finally)

Coefficient of kinetic friction (μ) = 0.490

Acceleration due to gravity (g) = 9.8 m/s²

Now, we know that, from work-energy theorem, the work done by the net force on a body is equal to the change in its kinetic energy.

Here, the net force acting on the skater is only frictional force which acts in the direction opposite to motion.

Frictional force is given as:

f=\mu N

Where, 'N' is the normal force acting on the skater. As there is no vertical motion, N=mg

∴ f=\mu mg=0.490\times 90\times 9.8=432.18\ N

Now, work done by friction is a negative work as friction and displacement are in opposite direction and is given as:

W=-fd=-432.18d

Now, change in kinetic energy is given as:

\Delta K=\frac{1}{2}m(v^2-u^2)\\\\\Delta K=\frac{1}{2}\times 90(0-12^2)\\\\\Delta K=45\times (-144)=-6480\ J

Therefore, from work-energy theorem,

W=\Delta K\\\\-432.18d=6480\\\\d=\frac{6480}{432.18}\\\\d=14.99\approx 15\ m

Hence, the skater covers a distance of 15 m before stopping.

7 0
3 years ago
How much acceleration does a car need if it is to go a distance of 620 ft. In a time of 20 sec while it is speeding up
yan [13]
31ft/second . 620/20
3 0
3 years ago
Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?
beks73 [17]

Answer:

Acceleration is 0.25m/s^2

Explanation:

Given the following :

Speed = 0.5m/s

Radius(r) of circle = 1m

Acceleration round a circular path is given as :

a = v^2 / r

Where

a = acceleration of the body

v = speed / velocity

r = radius

Therefore,

a = v^2 / r

a = (0.5)^2 / 1

a = 0.25m/s^2

7 0
2 years ago
Other questions:
  • Select all that apply.
    5·1 answer
  • A car accelerates from rest to 12 m/s in 4 seconds. What is its acceleration?
    12·1 answer
  • List and explain briefly similarities and differences between the electric force between two charges and the gravitational force
    14·1 answer
  • A large box of mass M is moving on a horizontal surface at speed v0. A small box of mass m sits on top of the large box. The coe
    13·1 answer
  • During a move, Jonas and Matías carry a 115kg safe to the third floor of a building, covering a height of 6.6m.
    13·2 answers
  • The mass of a sports car is 1000 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.260 and the frontal
    14·2 answers
  • To understand the meaning of the variables that appear in the equations for rotational kinematics with constant angular accelera
    8·1 answer
  • Quantitative data is _____________ Lesson 1.11
    9·1 answer
  • 1. A wave with a frequency of 10 Hz has a wavelength of 3 meters. At what
    14·1 answer
  • The voltage in a circuit is given by the equation V = IR . In this equation , Vis the voltage, the current, and Ris the resistan
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!