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
never [62]
2 years ago
7

You are driving a car at the 25-mi/h speed limit when you observe the light at the intersection 65 m in front of you turn yellow

. You know that at that particular intersection the light remains yellow for exactly 6.0s before turning red. After you think for 1.0 s, you then accelerate the car at a constant rate. You somehow manage to pass your 4.1 m car completely through the 15.0 m wide intersection just as the light turns red, thus narrowly avoiding a ticket for running a red light. Immediately after passing through the intersection you take your foot off the accelerator, relieved. However, down the road you are pulled over for speeding. You assume you were ticketed for the speed of your car as it exited the intersection. Determine this speed and decide whether you should fight this ticket in court.
Physics
1 answer:
ahrayia [7]2 years ago
4 0

Answer:

v_f = 50 mph

since the speed is exceeded the speed limit so it should not cross the junction

Explanation:

Initial speed of the car is given as

v_i = 25 mph

now we will have

v_i = 11.2 m/s

now the distance that car should move to cross the intersection is given as

d = 65 + 15 + 4.1

d = 84.1 m

Now time to cross the junction is

t = 6 - 1 = 5 s

now the acceleration of the car must be

d = v_i t + \frac{1}{2}at^2

84.1 = 11.2(5) + \frac{1}{2}a(5^2)

a = 2.25 m/s^2

Now the final speed of the car is given as

v_f = v_i + at

v_f = 11.2 + (2.25\times 5)

v_f = 22.4 m/s

v_f = 50 mph

since the speed is exceeded the speed limit so it should not cross the junction

You might be interested in
Which nucleus completes the following equation?
natka813 [3]
the answer is C




IGNORW irritating but not even on the golden bath bath and
3 0
3 years ago
Which of these ideas was part of the earliest model of the atom?
babymother [125]
I think the answer is D
4 0
3 years ago
Read 2 more answers
A small object is attached to a horizontal spring and set in simple harmonic motion with amplitude A and period T .
kupik [55]

Answer:

t = 3/2T

To find how long it takes to cover a total distance of 6A, we need to find the time it takes to cover a distance A then multiply by 6.

The step to the solution is given below in the attachment.

Explanation:

Thank you for reading

4 0
2 years ago
The amount of fluid displaced by a submerged object depends on its
Daniel [21]
The amount of fluid displaced by a submerged object depends on its volume.
7 0
3 years ago
Read 2 more answers
Properties seen when one substance changes to another are know as ____ properties
maxonik [38]

Answer: chemical property

Explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • Geneva says that the only thing that is needed for people to hear the sounds around us is a vibrating object
    7·2 answers
  • You toss a marble straight up into the air with a speed of 1.3 m/s. How long does it take the marble to reach its highest point?
    10·2 answers
  • "How did your current and voltage measurements differ between the series and parallel circuits you created
    14·1 answer
  • An athlete stretches a spring an extra 28.6 cm beyond its initial length. how much energy has he transferred to the spring, if t
    13·1 answer
  • The law of conservation of energy applies:
    14·1 answer
  • Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they are se
    8·1 answer
  • A 90kg man is standing still on frictionless ice. His friend tosses him a 10kg ball, which has a horizontal velocity of 20m/s. A
    5·2 answers
  • A particle (mass = 4.0 g, charge = 80 mC) moves in a region of space where the electric field is uniform and is given by Ex = -2
    11·1 answer
  • A bug is moving along a meter stick in the negative direction at a constant speed of 0.85cm/s. After 42 seconds have passed the
    9·1 answer
  • Why doesn’t change in a substance during a physical change?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!