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
mr Goodwill [35]
3 years ago
6

Your 64-cm-diameter car tire is rotating at 3.5 rev/s when suddenly you press down hard on the accelerator. After traveling 200

m, the tire’s rotation has increased to 6.0 rev/s. What was the tire’s angular acceleration? Give your answer in rad/s2.
Physics
1 answer:
andreyandreev [35.5K]3 years ago
4 0

Answer: angular acceleration = 0.748rad/s²

Explanation: according to the question, our answer needs to be in rad/s², thus all units in rev/s will be converted to rad/s

Assuming the motion of the object is of a constant angular acceleration, then newton's laws of motion is applicable.

The formulae below is used

v² = u² + 2αθ

v = final angular speed =6rev/s = 6*2π = 12π rad/s

u =initial angular speed =3.5rev/s = 3.5 *2π = 7π rad/s

Note 1 rev = 2π rad.

α = angular acceleration.

θ = angular displacement.

Diameter = 64cm = 0.64m, radius = 64/2 = 32cm = 0.32m

The angular displacement can be gotten using the formulae below

S = rθ, where s= linear distance covered = 200m, r = radius = 0.32m

θ = S/r = 200/0.32=625 rad.

By substituting the parameter we have that

(12π)² = (7π)² + 2α(625)

1421.22 = 486.31 + 1250α

1421.22 - 486.31 = 1250α

934.91 = 1250α

α = 934.91/1250

α= 0.748 rad/s²

You might be interested in
Use tug of war to explain balanced and unbalanced forces
Dimas [21]
Forces equal the flag doesn't move either direction

Unequal forces the flag moves in the direction of the greater magnitude force
4 0
3 years ago
Light waves that cross from an air medium to a water medium will
il63 [147K]

C. change length and direction

Explanation:

The density of the material in which the light wave is travelling affects the speed of the wave. Different materials have different densities and they effect differently light waves which travel through them. Light waves may change direction at the boundary between two transparent materials, depending on material density. Density also impacts the speed of light. The denser the material, the slower light travels through it. The wavelength also decreases as light travels through the denser medium.

3 0
2 years ago
The component that allows a car to execute complex maneuvers is __________ .
Charra [1.4K]
The anti-lock braking system (ABS) is a car component that enables the driver to execute complex maneuvers. Furthermore, it allows shifting the position of your car when driving on highways because of its ability to "maintain traction." It also can decrease the kinetic energy of your car when you want to make it decelerated.
6 0
2 years ago
Can someone help me with the 10th one which is circled
PtichkaEL [24]
Force can be exerted into an object with out it moving, but if you were to move the object due to force it would be considered work. (yes, you can exert force without having the object moving)
6 0
2 years ago
Read 2 more answers
What are the factors that affect ocean density?<br><br> Please help!!
Paul [167]

The density of seawater plays a vital role in causing ocean currents and circulating heat because of the fact that dense water sinks below less dense. long story short, seawater is the problem because its denser than pure water.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Astronomers determine that a certain square region in interstellar space has an area of approximately 2.4 \times 10^72.4×10 ​7 ​
    7·1 answer
  • All chordates are vertebrates?<br> A. True <br> B. False
    6·2 answers
  • To become positively charged, an atom must:
    9·1 answer
  • A favorable entropy change occurs when δs is positive. what can be said about the order of the system when δs is positive?
    6·1 answer
  • Really need help with this Physics question!
    5·1 answer
  • In a lunar eclipse, does the Moon enter the shadow of Earth from the east or west side? Explain.
    15·2 answers
  • If an object has 100 J of PE, how much work can it do (with that PE)?
    15·1 answer
  • 135g of an unknown substance gains 9133 J of heat as it is heated from 25⁰C to 100⁰C. Using the chart below, determine the ident
    13·1 answer
  • Jody drives 120 miles south from Kingston, NY to Princeton, NJ. If she drives 60 mph, how long will it take her to make the trip
    13·2 answers
  • Select the correct answer.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!