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
spin [16.1K]
3 years ago
5

A test car starts from rest on a horizontal circular track of 85-m radius and increases its speed at a uniform rate to reach 115

km/h in 13 seconds. Determine the magnitude a of the total acceleration of the car 11 seconds after the start.
Physics
1 answer:
Mashutka [201]3 years ago
4 0

Answer:

27.03 m/s.

Explanation:

vo = 0 m/s

vi = 115 km/h

Converting to m/s,

115 km/h * 1000 m/1 km * 1 h/3600 s

= 31.94 m/s.

Using equation of motion,

vi = vo + at

a = 31.94/13

= 2.46 m/s^2

After t = 11 s,

vi = 2.46 * 11

= 27.03 m/s.

You might be interested in
A negative test charge will accelerate toward regions of ________ electric potential and ________ electric potential energy.
dalvyx [7]

Answer: higher and lower

Explanation:

 charge in an electric field will experience a force in the direction of decreasing potential energy. Since the electric potential energy of a negative charge is equal to the charge times the electric potential the direction of decreasing electric potential energy is the direction of increasing electric potential.

5 0
3 years ago
How is coulomb's law similar to newton's law of gravity?
Umnica [9.8K]
<span>Newton's law of gravitation is attractive, whereas Coulomb's law is attractive or repulsive. Both are proportional to the inverse square of distance.</span>
4 0
3 years ago
This. please help me.
kramer
The transfer of heat from the Sun is in the form of thermal radiation (also called infrared radiation)
The transfer of heat at the person’s feet is by thermal conduction. During the day the sand will be hot so if you step on it with bare feet there will be conduction of heat to the feet.
3 0
3 years ago
What will most likely still occur when the economy has achieved full employment?
kiruha [24]
The economy will never be fully employed in the future the economy will be completely unemployed because pretty soon we will invent robots that'll take our jobs
5 0
3 years ago
Calculate the minimum area moment of inertia for a rectangular cross-section with side lengths 6 cm and 4 cm.
Butoxors [25]

Answer:

Minimum Area of rectangle = 24 centimeter²

Explanation:

Given:

Length of rectangle = 6 centimeter

Width of rectangle = 4 centimeter

Find:

Minimum Area of rectangle

Computation:

Minimum Area of rectangle = Length of rectangle x Width of rectangle

Minimum Area of rectangle = 6 x 4

Minimum Area of rectangle = 24 centimeter²

7 0
3 years ago
Other questions:
  • Environmental advantage of using plant oil
    13·1 answer
  • Does the temperature of the water change the fluid pressure in the water?
    5·1 answer
  • A velocity vs. time graph starts at 0 and ends at 10 m/s, stretching over a time- span of 15 s with constant acceleration. What
    14·1 answer
  • Astar begins as a blank a large cloud of gas and dust
    10·1 answer
  • A flatbed truck is supported by its four drive wheels, and is moving with an acceleration of 6.3 m/s2. For what value of the coe
    7·1 answer
  • 3. A fighter jet covers a distance of 895m while accelerating from 22m/s to 35m/s. How long (in
    9·1 answer
  • If you wanna make it easier you can number them going down 1,2,3, or 4 &amp; just tell me the number
    13·1 answer
  • Find the magnitude of the force at point x = 15cm if k=10500 N/m when the work done by this force is WD= 1/2k x2
    6·1 answer
  • The data points you have taken on your lab graphs roughly form a straight line. How do you interpret the slope of this line?
    12·2 answers
  • How is fission used to produce electricity? a. the heat generated from the fission reaction is used to boil water, which rises a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!