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
gtnhenbr [62]
3 years ago
10

A car having a mass of 500 kg is initially at rest. A constant 1,000 N net force acts on the car over a distance of 50 m, causin

g the car to speed up. After it travels 50 m, the car moves with constant velocity.
a.) What is the total work done on the car over the 50 m distance it travels while speeding up?
b.) How fast is the car moving after 50 m?
c.) What is the net force on the car while its moving with constant velocity?
d.) What is the total work done on the car while its moving with constant velocity?
Physics
1 answer:
nirvana33 [79]3 years ago
6 0

Answer:

(a) 50 kJ

(b) 14.14 m/s

(c) 0 N

(d) 0 J

Solution:

As per the question:

Mass of car, m = 500 kg

Force, F = 1000 N

Distance traveled, s = 50 m

Now,

(a) The total work done can be given as:

W = F\times s = 1000\times 50 = 50000\ J = 50\ kJ

(b) To calculate the speed of the car:

Using work-energy relation, we can say that the work done equals the change in the kinetic energy of the car:

W = \Delta KE

\frac{1}{2}m(v'^{2} - v^{2}) = 50000

where

v' = final velocity

v = initial velocity = 0

Now,

\frac{1}{2}\times 500v'^{2} = 50000

v' = \sqrt{200} = 14.14\ m/s

(c) To calculate the net force on the car when the velocity is constant:

The net force is given as the product of mass and acceleration:

F = ma

<em>Acceleration can be defined as the rate with which the velocity of the car changes and the since the velocity is constant, the car will not have any acceleration, a = 0</em>

Thus the net force is also zero.

F_{net} = 500\times 0 = 0\ N

(d) The total work done when the car moves with constant velocity:

W = F_{net}.s = 0\ J

You might be interested in
Will a beam of light that is, at first, in air and oriented perpendicular to the surface of a body of water be deflected as a re
EastWind [94]

When a beam of light  that is, at first, in air and oriented perpendicular to the surface of a body of water be deflected as a result of transition into water--------It does not deflect , the light direction will not change.

What happens to light when it passes through air?

All materials have what is known as an index of refraction, which is linked to how fast light can travel through the material. As light passes through air and into another clear material (such as glass), it changes speed, and light is both reflected and refracted by the glass.

How does light travel through air and water?

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it 'bends' more towards the normal line.

Learn more about direction of beam of light:

brainly.com/question/31869803

#SPJ4

4 0
2 years ago
60 POINT!!!!!!
Genrish500 [490]
You in college stop cheating
8 0
2 years ago
Read 2 more answers
HELP ME! PLEASE! SOMEONE! THIS QUESTION IS VERY HARD! THERE ARE 3 ANSWERS! HELP ME PLEASE! MAKE SURE TO EXPALIN
blondinia [14]

Answer:

search up the kinetic energy and potential energy etc. then take them and look at the characteristica are they the same? What makes them similar? Why are they different ? How? Then add the chemical nuclear and electrical changes it creates. Now the rest! There you’ve got this! If you need support I’m here! Hope this helped!

Explanation:

6 0
2 years ago
A top-fuel dragster accelerates from rest to a velocity of 100 m/s in 8 s. What is the acceleration?
seropon [69]

Answer:

100 m/s ÷ 8 = 12.5 m/s

Explanation:

You must put multiply (÷)

4 0
2 years ago
Everyday activities do NOT produce significant muscle growth because:
Reil [10]

Answer:

When elements bond together or when bonds of compounds are broken and form a new substance

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Someone help me please...
    15·1 answer
  • Describe three common issues that affect societies across places and times
    7·1 answer
  • Can anyone explain the seasons of the earth?
    7·1 answer
  • Evaporation is a process that requires energy to occur
    8·1 answer
  • What does a step-up transformer increase?<br><br> A. power<br> B. energy<br> C. force<br> D. voltage
    14·2 answers
  • Assuming no friction, what is the minimum work needed to push a 1000 kg car 45.0 m up a 12.5 incline?
    10·2 answers
  • 680 hertz 0.5 meters whats the speed of the sound of the wave
    7·1 answer
  • Which explains earthquakes and volcanic eruptions
    12·2 answers
  • 1. The unit of power is called a derived unit, why?
    9·1 answer
  • im sick entired of being warned but its what eves plz stop warning me plz im just trying to make frinedns
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!