![aprilreneeclaroxob0c](/avatars/40086.jpg)
aprilreneeclaroxob0c
17.05.2021 •
Physics
Activity: Solve each problem involving acceleration. Be sure to show all solutions and to use the correct units. 1. While traveling along a highway a driver slows from 45 m/s to 15 m/s in 12 seconds. What is the automobile's acceleration? 2. A biker accelerates at a rate of 7 m/s2. How long will it takes the biker to reach a speed of 18 m/s?
Solved
Show answers
More tips
- F Food and Cooking Deflope: What is it and how does it work?...
- B Business and Finance How to Create a Business Plan? Your Ultimate Guide...
- F Food and Cooking Unusually Delicious Shashlik - Follow the Etiquette of Proper Preparation!...
- C Computers and Internet Make Easy Accessible Screenshots on iPad in Just a Few Minutes...
- T Travel and tourism Lost in the Catacombs: What to Do?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- H Health and Medicine How to Treat Styes: Causes, Symptoms, and Home Remedies...
- L Legal consultation What Documents Are Required for a Russian Passport?...
- F Family and Home How to Properly Use a Water Level?...
- H Horoscopes, Magic, Divination How to Cast a Love Spell on a Guy? Guide for Guys...
Answers on questions: Physics
- P Physics Explain how the complete cycle of how refrigerator works...
- P Physics Sugar comes from a plant called sugarcane. during processing, live sugarcane is cut from fields, the sugar is taken from the plants, and then the sugar is heated. which conclusion...
- P Physics Which was not an adaptation that enabled amphibians to live on land? A- Ability to breathe oxygen B- ability to lay eggs C- Strong Limbs D- Thick skin No links or files 8th...
- P Physics Newton’s heliocentric view of the universe meant that the sun was the center of the universe. true false...
- P Physics Which of the following correctly describes what happens when an atomic bomb explodes? select the correct answer below: small pieces of fissionable material are joined and...
- P Physics 1.a slanted vector has a magnitude of 41 n and is at an angle of 23 degrees north of east. what are the magnitude and direction of the horizontal and vertical components of...
- P Physics 1. una ambulancia que se mueve con una velocidad de 120 km/h, necesita recorre un tramo recto de 60 km. Calcula el tiempo necesario para que la ambulancia llegue a su destino....
- M Mathematics Answers needed nowwwwwwwww...
- E English Victoria is researching autism. Which article would provide the MOST helpful information? A) FAQs of Childhood Diseases B) American Psychiatric Issues C) Autism: Causes, Cures,...
- M Mathematics If x +y = 14 and x - y = 6, then the product of 2 and y is equal to which of the following?...
Ответ:
1. a = - 2.5 m/s²
2. t = 2.57 s
Explanation:
1.
The acceleration of the driver can be found using the first equation of motion:
where,
vf = final speed = 15 m/s
vi = initial speed = 45 m/s
a = acceleration = ?
t = time = 12 s
Therefore,
a = - 2.5 m/s²
negative sign indicates deceleration
2.
The time taken by the biker to accelerate can be found by using the first equation of motion again:
where,
vf = final speed = 18 m/s
vi = initial speed = 0 m/s
a = acceleration = 7 m/s²
t = time = ?
Therefore,
t = 2.57 s
Ответ: