A car starts from rest at a stop sign. It accelerates at 4.6 m/s^2 for 6.2 s , coasts for 2.1s , and then slows down at a rate of 3.3 m/s^2 for the next stop sign. How far apart the are the stop signs?

1 answer
Question:

A car starts from rest at a stop sign. It accelerates at 4.6 m/s^2 for 6.2 s , coasts for 2.1s , and then slows down at a rate of 3.3 m/s^2 for the next stop sign. How far apart the are the stop signs?

Answers

Answer:D = 271.54 mExplanation:given,1. car accelerates at 4.6 m/s² for 6.2 s2. constant speed for 2.1 s3. slows down at 3.3 m/s² distance travel for case 1using equation of motion  [tex]d_1 = u t +\dfrac{1}{2}at^2[/tex]  [tex]d_1 =\dfrac{1}{2}\times 4.6\times 6.2^2[/tex]       d₁ = 88.41 mcase 2 constant speed for 2.1 s now, we have to find velocityv = u  + atv = 0 + 4.6 x 6.2v = 28.52 m/sdistance travel in case 2d₂ = v x td₂ = 28.52 x 2.1 = 59.89 mfor case 3 distance travel by the car v² = u² + 2 a sfinal velocity if the car is zero0² = 28.52² + 2 x (-3.3) x d₃6.6 d₃ = 813.39  d₃ = 123.24 mtotal distance travel by the car D = d₁ + d₂ + d₃D = 88.41 + 59.89 + 123.24D = 271.54 m

Similar Solved Questions

2 answers

Is Anyone on? Cause I'm Bor'ed

Is Anyone on? Cause I'm Bor'ed...
2 answers

Convert 15,840 feet into miles. (1 mile = 1,760 yards; 1 yard = 3 feet)

Convert 15,840 feet into miles. (1 mile = 1,760 yards; 1 yard = 3 feet)...
1 answer

What is 56.6 repeating when rounded to the nearest .1

what is 56.6 repeating when rounded to the nearest .1...
2 answers

Consider the diagram below. Choose the postulate that is NOT represented in the diagram. A If two lines intersect, they intersect in exactly one point. B Given a point on a plane, there is one and only one line perpendicular to the plane through that point. C С If two points lie in a plane, then the line containing those points will also lie in the plane. D If two planes intersect, they intersect in exactly one line.

Consider the diagram below. Choose the postulate that is NOT represented in the diagram. A If two lines intersect, they intersect in exactly one point. B Given a point on a plane, there is one and only one line perpendicular to the plane through that point. C С If two points lie in a plane, then th...
1 answer

Most people are either Mac or PC users and have a strong preference for their computer and operating system of choices True False

Most people are either Mac or PC users and have a strong preference for their computer and operating system of choices True False...
1 answer

Idk the answer pls help! I need it fast

Idk the answer pls help! I need it fast...
1 answer

Write a word phrase that represents the expression 3q/2

write a word phrase that represents the expression 3q/2...
2 answers

(GIVING BRAINLIEST!!!!) Which of the following was a weakness of the Articles of Confederation? A) Congress had the power to put together an army to defend the country. B) Delegates from each state had the power to vote. C) Congress was not given the power to levy taxes. D) The states were unified under one government.

(GIVING BRAINLIEST!!!!) Which of the following was a weakness of the Articles of Confederation? A) Congress had the power to put together an army to defend the country. B) Delegates from each state had the power to vote. C) Congress was not given the power to levy taxes. D) The states were unified u...
2 answers

Jeremy is looking for two different lawncare companies to weed and mulch his flower beds. greenscape charges $100 for the mulch plus $12 per hr for labor. D&J landscape charges $23 per hr for the job including the mulch. what is the minimum number of hours the job could be for D&J Landscape to have the better deal?

jeremy is looking for two different lawncare companies to weed and mulch his flower beds. greenscape charges $100 for the mulch plus $12 per hr for labor. D&J landscape charges $23 per hr for the job including the mulch. what is the minimum number of hours the job could be for D&J Landscape ...
1 answer

Please help I’m in a timed quiz

please help I’m in a timed quiz...
1 answer

Hello can someone help solve this ?

Hello can someone help solve this ?...
1 answer

The part of the nervous system that consists of various nerve processes and receptors is the _____ nervous system. a. central b. integrative c. peripheral d. subdural

The part of the nervous system that consists of various nerve processes and receptors is the _____ nervous system. a. central b. integrative c. peripheral d. subdural...
1 answer

What European power were the British worried would attack from the south?

What European power were the British worried would attack from the south?...
1 answer

Sally opens a bank account with $450. If she earns 4% simple interest per year, how much interest will she earn in 5 years if she doesn't add or withdraw any money during that time? Please type the steps that you use to solve this problem below.

Sally opens a bank account with $450. If she earns 4% simple interest per year, how much interest will she earn in 5 years if she doesn't add or withdraw any money during that time? Please type the steps that you use to solve this problem below....
1 answer

If a bond with face value of $1,000 and a coupon rate of 8% is selling at a price of $970, is the bond’s yield to maturity more or less than 8%?

If a bond with face value of $1,000 and a coupon rate of 8% is selling at a price of $970, is the bond’s yield to maturity more or less than 8%?...
1 answer

PLEASE HELP ASAP2 5 PTS

PLEASE HELP ASAP2 5 PTS...
1 answer

Recall that Ekman and Friesen (1971) have demonstrated that Fore tribespeople from a preliterate culture in New Guinea were able to decode the facial expressions of Westerners and encode emotion easily interpretable by Westerners. Their findings suggest that Darwin was:

Recall that Ekman and Friesen (1971) have demonstrated that Fore tribespeople from a preliterate culture in New Guinea were able to decode the facial expressions of Westerners and encode emotion easily interpretable by Westerners. Their findings suggest that Darwin was:...
1 answer

Please help me with question 5

Please help me with question 5...
1 answer

What day did the battle of okinawa start and end?

What day did the battle of okinawa start and end?...

-- 0.018079--