A car slams on its brakes, coming to a complete stop in 4.0 seconds. The car was traveling south at 60.0 mph. Calculate the acceleration.

Answers

Answer 1
Answer: Alright let's start this off with our basic equation!

Accerlation (a) = ?

Initial velocity (V1)= 60 mph = 88 ft/s (because we HAVE to convert mph to ft/s to match time)

Final velocity (V2) = 0 ft/s because the car stops

Time (t) = 4 seconds

a = (Final velocity - Initial Velocity)/(time)
a = (0 - 88)/(4)
a = (-88)/(4)
a = -22 

Therefore, your acceleration is -22 ft/s² !! Hope this helped and was one of the branliest answers :') 



Related Questions

When the core of a star like the sun uses up its supply of hydrogen for fusion, the core begins to ________?
Explain Newton's third law in your own words.
Kepler found that the orbits of the planets were _____. circular amorphous oval elliptical
How does is the terminal velocity of a feather different from the terminal velocity of an egg?
True or false:when a plant falls from a window it's thermal energy is transformed into kinetic energy.

A bottle lying on the windowsill falls off and takes 4.95 seconds to reach the ground. The distance from the windowsill to the ground is 120.00 meters. Find the time the bottle would take to land if it were to fall the same distance on the moon instead of Earth.

Answers

The time of the bottle would take to land if it were to fall the same distance on the moon instead of Earth is 12.12 seconds.

To find the Time, the given values are,

A bottle lying on the windowsill fall = 4.95 seconds

The distance of the object to the ground = 120 meters

What is the distance of the object?

The distance d an object falls under the influence of gravity is determined by the equation

                        D  =  (1/2) (g) (t²)

where,

D - Distance

g - acceleration of gravity

t²- square of the falling time

In the equation,

Multiply each side by  2 : 2 D = gt²

Divide each side by ' g ' : 2 D/g = t²

Square root each side: t = √ (2D/g)

Gravity on the surface of the moon is roughly  1/6  the value

of gravity on the surface of the Earth.

So we expect ' t ' to increase by  √6  =  2.45 times.

It would take the same bottle  (2.45 x 4.95) = 12.12 seconds

to roll off the same window sill and fall 120 meters down to the surface of the Earth.

Thus, the time of the bottle would take to land if it were to fall the same distance on the moon instead of Earth is 12.12 seconds.

Learn more about object fall due to the gravity,

brainly.com/question/9476165

#SPJ6


The distance an object falls from rest through gravity is

                         D  =  (1/2) (g) (t²)

            Distance  =  (1/2 acceleration of gravity) x (square of the falling time)

We want to see how the time will be affected
if  ' D ' doesn't change but ' g ' does.
So I'm going to start by rearranging the equation
to solve for ' t '.

                                                      D  =  (1/2) (g) (t²)

Multiply each side by  2 :         2 D  =            g    t² 

Divide each side by ' g ' :      2 D/g =                  t²

Square root each side:        t = √ (2D/g)


Looking at the equation now, we can see what happens
to ' t ' when only ' g ' changes: 

-- ' g ' is in the denominator; so bigger 'g' ==> shorter 't'
                                             and smaller 'g' ==> longer 't' .

-- They don't change by the same factor, because  1/g  is inside
the square root.  So 't' changes the same amount as  √1/g  does.

Gravity on the surface of the moon is roughly  1/6  the value
of gravity on the surface of the Earth.

So we expect ' t ' to increase by  √6  =  2.45 times.

It would take the same bottle  (2.45 x 4.95) = 12.12 seconds
to roll off the same window sill and fall 120 meters down to the
surface of the Moon.

How are mass and inertia related

Answers

inertia is the resistance of any physical object to any change in its state of motion. inertia exists due to the mass of the object

A speeder passes a parked police car at a constant speed of 23.3 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.75 m/s 2 . How much time passes before the speeder is overtaken by the police car? Answer in units of s.

Answers

Answer:

32s

Explanation:

We must establish that by the time the police car catches up to the speeder, both have travelled a certain distance during the same amount of time. However, the police car experiences accelerated motion whereas the speeder travels at a constant velocity. Therefore we will establish two formulas for distance starting with the speeder's distance:

x=vt=23.3(m)/(s)t

and the police car distance:

x=vt+(at^(2))/(2)=0+(2.75(m)/(s^(2)) t^(2))/(2)=0.73(m)/(s^(2))

Since they both travel the same distance x, we can equal both formulas and solve for t:

0 = 0.73(m)/(s^(2))t^(2)-23.3(m)/(s) t\n\n0=t(0.73(m)/(s^(2))t-23.3(m)/(s) )\n\n

Two solutions exist to the equation; the first one being t=0

The second solution will be:

0.73(m)/(s^(2))t=23.3(m)/(s)\n\nt=(23.3(m)/(s))/(0.73(m)/(s^(2)))=32s

This result allows us to confirm that the police car will take 32s to catch up to the speeder

What are two types of mechanical energy?electrical and kinetic
nuclear and chemical
radiant and thermal
elastic and gravitational

Answers

Two types of mechanical energy are electrical and kinetic. If you need me to describe why just ask. Hope this helped!

ps would u mind giving me a brainliest answer i'm trying to get a new rank thanks lol

elastic and gravitational, D

Which is an example of larceny? A. taking a man's wallet while threatening him with a firearm. B. taking $50 from an unattended purse. C. stealing a man's car? D. breaking into a home and stealing $10,000 cash

Answers

Taking $50 from an unattended purse is an example of larceny. The correct Option is  B.

What is Larceny?

Larceny is a type of theft that involves the taking of someone else's property without their consent and with the intent to permanently deprive them of it. It is often referred to as "simple theft" and is considered a crime in most legal systems around the world.

Larceny can take many forms, including stealing money or goods from a store, taking personal property from an individual, or taking valuables from an unattended location. The key element of larceny is that the property is taken without the owner's consent, and the perpetrator intends to keep the property permanently.

The severity of the crime of larceny can vary depending on the value of the property stolen and the circumstances of the theft. In many legal systems, larceny is classified as a misdemeanor or a felony, with the latter carrying a more severe penalty.

In addition to criminal penalties, a person convicted of larceny may also be subject to civil lawsuits and may be required to pay restitution to the victim. Overall, larceny is a serious crime that can have significant consequences for both the perpetrator and the victim.

Here in the question,

Larceny is a type of theft that involves the taking of someone else's property without their consent, with the intent to permanently deprive them of it. It is often referred to as "simple theft."

Option A (taking a man's wallet while threatening him with a firearm) is an example of robbery, which involves the use of force or threat of force to take someone else's property.

Option C (stealing a man's car) is an example of grand theft auto, which is a specific type of larceny that involves the theft of a motor vehicle.

Option D (breaking into a home and stealing $10,000 cash) is an example of burglary, which involves unauthorized entry into a building with the intent to commit a crime, such as theft.

Therefore, the correct option that is an example of larceny is B (taking $50 from an unattended purse) as it involves the taking of someone else's property without their consent, with the intent to permanently deprive them of it.

To learn more about Larceny click:

brainly.com/question/17612570

#SPJ2

a would be the answer because larceny is theft of someone's personal property.

What role does energy play when an object is not moving?

Answers