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
mixas84 [53]
2 years ago
5

A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 38 ft/s2. what is the dist

ance covered before the car comes to a stop?
Physics
1 answer:
e-lub [12.9K]2 years ago
4 0

Convert 38 ft/s^2 to mi/h^2. Then we se the conversion factor > 1 mile = 5280 feet and 1 hour = 3600 seconds.

So now we show it > 38  \frac{ft}{s^2}  x  \frac{1mi}{5280ft} x  \frac{(3600s)^2}{(1h)^2} = 93272.27  \frac{mi}{h^2}

Then we have to use the formula of constant acceleration to determine the distance traveled by the car before it ended up stopping.

Which the formula for constant acceleration would be > v_2^2=v_1^2 + 2as

The initial velocity is 50mi/h (v_1=50)

When it stops the final velocity is (v_2=0)

Since the given is deceleration it means the number we had gotten earlier would be a negative so a = -93272.27

Then we substitute the values in....

0^2 = 50^2 + 2(-93272.27)s

0 = 2500 - 186544.54s

Isolate S next.

185644.54s= 2500

s =  2500/(185644.54)

s=0.0134


So we can say the car stopped at 0.0134 miles before it came to a stop but to express the distance traveled in feet we need to use the conversion factor of 1 mile = 5280 feet in otherwards > 0.0134 mi *  \frac{5280ft}{1mi}  = 70.8 ft
So this means that the car traveled in feet 70.8 ft before it came to a stop.

You might be interested in
Calculate the wave length of a water wave with a speed of 20 m/s and a frequency of 2.5 Hz
12345 [234]

Wavelength of the water wave is 8 m

Explanation:

  • Wavelength measures the distance between two successive crests or troughs of the wave. It is given by the following equation

λ = v/f, where f is the frequency, v is the velocity of the wave

Here, v = 20 m/s and f = 2.5 Hz

⇒ λ = 20/2.5

      = 8 m

5 0
2 years ago
Which process requires the addition of energy to water?
Taya2010 [7]

Water must absorb energy in order to melt, evaporate, or get warmer.

3 0
2 years ago
Charges that do not transfer
ratelena [41]

Answer:what is the question exactly

Explanation:

8 0
3 years ago
A truck is moving at a constant speed of 50 m/s. A boy riding in the back of the truck throws a newspaper out the back of the tr
lbvjy [14]

Answer:

70m/s

Explanation:

7 0
3 years ago
The average human has a density of 945 kg/m3 after inhalation, and 1020 kg/m3 after exhalation. Fresh water has a density of 100
Montano1993 [528]

Answer:

a. The human body has nearly the same density as salt water after exhaling.

b. The human body will always float in the Dead Sea.

Explanation:

According to the concept of floating on the basis of  density, any body that is put in a fluid of density greater than its own density will always float due to the force of buoyancy from the liquid.

  • The portion of the object submerged  while the object is floating depends upon the density of the object as compared to the density of the fluid. This is governed by the equation:

\rho_f.V_s=\rho_o.V_o

where:

\rho_f= density of the fluid

\rho_o= density of the object

V_s= volume of the object submerged in the fluid

V_o= total volume of the object

6 0
3 years ago
Other questions:
  • A piece of wire 26 m long is cut into two pieces. one piece is bent into a square and the other is bent into an equilateral tria
    7·1 answer
  • What happenings when multiple forces act on an object
    7·1 answer
  • Puzzle 3
    5·1 answer
  • A car with a mass of 2.0 * 10^3 kg is traveling at 15 m/s. what is the momentum of the car?
    12·1 answer
  • In the diagram, ∠D is b
    6·1 answer
  • Water towers store water above the level of consumers for times of heavy use, eliminating the need for high-speed pumps. How hig
    5·1 answer
  • Consider this situation: A force is applied to a box to move it
    11·1 answer
  • Circuit theroy: Find current in Ix and Iy
    11·1 answer
  • 1. The saw cut that is made at 450-75° angles to the annual rings is called:
    12·1 answer
  • a sample contains 100 g of radioactive isotope. How much radioactive isotope will remain in the sample after 1 half-life?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!