A 1451 kg car is traveling at 48.0 km/h. Compared to 48.0 km/h, what would be the fraction of energy the car would have if it were traveling at 24.0 km/h.

Answers

Answer 1

Answer: We know, kinetic energy is directly proportional to the square of velocity, So, if kinetic energy is halved it's velocity will reduce to its 1/4th value

In short, Your Answer would be 1/4

Hope this helps!

Answer 2

Answer: Ke = (1/2)(m)(v^2)
Ke = (1/2)(1451kg)(48^2)
Ke = 1,671,552 joules

Ke = (1/2)(1451)(24^2)
Ke = 417,888

1/4th the energy

Related Questions

A charge of 0.2 C experiences an electric force of 5 N. What is the strength of the electric field in N/C?
When an airplane\u2019s ailerons move in opposite directions they usually cause a plane to:"?
What determines the composition of a rock
Device that measures electric current
Which of the following statements describes an electric generator?A. A magnet is rotated through a coil of wire to produce an electric current.B. Electric potential in a rotating coil of wire creates a permanent magnet.C. An electrical current causes a coil of wire to rotate in a magnetic field.D. Forces from a permanent magnet allow a coil of wire to rotate.

Compare and contrast average speed and instantaneous speed

Answers

Average vs. Instantaneous Speed

During a typical trip to school, your car will undergo a series of changes in its speed. If you were to inspect the speedometer readings at regular intervals, you would notice that it changes often. The speedometer of a car reveals information about the instantaneous speed of your car. It shows your speed at a particular instant in time.

The instantaneous speed of an object is not to be confused with the average speed. Average speed is a measure of the distance traveled in a given period of time; it is sometimes referred to as the distance pertime ratio. Suppose that during your trip to school, you traveled a distance of 5 miles and the trip lasted 0.2 hours (12 minutes). The average speed of your car could be determined as

On the average, your car was moving with a speed of 25 miles per hour. During your trip, there may have been times that you were stopped and other times that your speedometer was reading 50 miles per hour. Yet, on average, you were moving with a speed of 25 miles per hour.

hope this helps

Newton's Third Law of Motion is often called the law of intertia.

True
False

Answers

This is False. Newton's First Law of Motion is often called the law of inertia.

What will be the velocity of body in horizontal motion of the body in the air?

Answers

Answer: Projectiles travel with a parabolic trajectory due to the influence of gravity. There are no horizontal forces acting upon projectiles and thus no horizontal acceleration, The horizontal velocity of a projectile is constant (a never changing in value.

Explanation: I hoped that helped yall !!

I agree with the first response that she put it is that.

What is the magnitude of a vector if the x component is - 12 m and the y component is 21m?290m

17m

24m

580m

Answers

Answer:

v = 24 m

Explanation:

Given that,

The x component of the vector = 12 m

The y component of the vector = 21 m

We need to find the magnitude of a vector. It can be solved as follows :

$v=√(12^2+21^2) \n\n=24.18\ m$

v = 24 m

So, the magnitude of the vector is equal to 24 m.

A car travels 10 miles East in 30 minutes. What is its velocity in miles per hour?

Answers

30min=30/60hr=0.5hr

velocity=distance/time=10mile/0.5hr=20 miles per hour East

There are 60 minutes in an hour so 30 minutes is 0.5 hour.

Velocity is equal to displacement / time

= 10 miles East / 0.5 hour

= 20 miles per hour East

1 Determine the wavelength, frequency, and amplitude for each wave.2. Sprays as
Summarize it!
c The
Time Elapsed: 45
D
-0.5 m
10 m
15 m
20 m
0.5 m
I. 0.5 m

Answers

Answer:

cbccfggssdaffzftyrd

Other Questions

A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine? A. 97 percent B. 96 percent C. 94 percent D. 92 percent

If a car can go from 0.0 to 60.0 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50.0 mi/hr?

Suppose an object starts out electrically neutral. Through some process, 11 electrons are removed from the object. What is the electric charge of the object afterward? ANSWER 1. Unselected It has a net charge somewhere between the charge of 11 electrons and 11 protons, but we can’t tell exactly how much. 2. Unselected The stated situation isn’t possible. 3. Unselected It has the same net charge as 11 protons. 4. Unselected It has the same net charge as 11 electrons.

Having some knowledge of psychology, you'll shine your shoes and "dress for success" before going to a job interview because you want to