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
fredd [130]
3 years ago
10

If a car skids 66 ft on wet concrete, how fast was it moving when the brakes were applied? (Round your answer to the nearest who

le number.)
Physics
1 answer:
Sonbull [250]3 years ago
8 0

Answer:

If a car skids 66 ft on wet concrete, it will move at 243 ft/s when the brake is applied.

Explanation:

To determine how fast the car was moving, after skidding, the formula below is used:

V = √32*fd

V is the car's speed (ft/s)

d is skid length (ft) = 66 ft

f is the coefficient of friction determined by the material the car was skidding on.

Coefficient of friction for wet concrete is 0.65

V = √32*fd

V = √32 *0.65* 66

V = 242.679 ft/s ≅ 243 ft/s (nearest whole number)

If a car skids 66 ft on wet concrete, it will move at 243 ft/s when the brake is applied.

You might be interested in
How will you demonstrate Newton's 1st Law of Motion at home? Brainstorm 2 or 3 possible demonstrations
Archy [21]
1. Roll a ball across a table into an object
2. Drop something
5 0
2 years ago
It is necessary to determine the specific heat of an unknown object. The mass of the object is 201.0 g. It is determined experim
navik [9.2K]
Mass = 0.201kg
Energy = 15J
temperature change = 10C

Energy(E) = mass(m) × specific heat capacity(c) × temperature change(θ)

we can rearrange this to make specific heat capacity the subject

c =\frac{E}{m\theta}

c =\frac{15}{2.01}
c =7.46268657

6 0
3 years ago
Read 2 more answers
Which would fall with a greater acceleration in a vacuum-a leaf or a stone?
hichkok12 [17]

They would fall with the same acceleration

4 0
3 years ago
Read 2 more answers
A 5 kg rock falls from an 8 m high cliff. What is the speed of the rock when it hits the ground?
Levart [38]

Answer:

3k mph

Explanation:

don't take my answer it is wrong

3 0
3 years ago
A wave has a wavelength of 9 mm and a frequency of 14 hertz. What is its speed?
lesantik [10]
Wavespeed = frequency x wavelength
= 14 x 9
= 126 mm/s
= 0.126 m/s
5 0
3 years ago
Other questions:
  • How are the mass and weight an object related? Include a description with words and a equation.
    9·1 answer
  • Ishani and John now try a problem involving a charging capacitor. An uncharged capacitor with C = 6.81 μF and a resistor with R
    11·1 answer
  • Describe what happens, at a microscopic level, when an object is charged by rubbing. For instance, what happens when a plastic p
    14·1 answer
  • If neutron stars are squeezed harder they collapse into black hole; how would this transition occur?
    15·1 answer
  • The total amount of force exerted on an object is called
    6·1 answer
  • A pontoon boat travels across a lake in a straight line and increases in speed uniformly from vi = 18.5 m/s to vf = 36.0 m/s in
    14·1 answer
  • The air also contains oxygen nitrogen and carbon dioxide what is the state of each of substance at -190°?
    11·2 answers
  • Which energy changes take place when a pedaling cyclist uses a generator (dynamo) to light his bicycle
    6·2 answers
  • Continuing from the other question
    6·1 answer
  • If the range of a projectile is and 256√3 m in the maximum height reached is 64 m. calculate the angle of projection​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!