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
Alecsey [184]
2 years ago
13

A 4 kg toy car moves horizontally on a rough road with coefficient of kinetic friction 0.2. It accelerates from rest to 20 m/s i

n 10 s. Find (a) the total work done on the car
Physics
1 answer:
attashe74 [19]2 years ago
4 0

The total work done on the car is 784Joule.

<h3>What's the acceleration of the car?</h3>
  • As per Newton's equation of motion, V= U+at
  • U= initial velocity= 0 m/s

V= vinal velocity= 20m/s

t= time = 10s

a= acceleration

  • So, 20= 0+ 10a

=> a= 20/10= 2m/s²

<h3>What's the distance covered by the car in 10 seconds?</h3>
  • As per Newton's equation of motion,

V²-U² = 2aS

  • S= distance covered by the car
  • So, 20²-0=2×2×S=4S

=> 400= 4S

=> S= 400/4= 100m

<h3>What's the work done on the car due to frictional force?</h3>

Work done by frictional force= frictional force × distance

= (0.2×4×9.8)×100

= 784Joule

Thus, we can conclude that the work done on the car is 784Joule.

Learn more about the work done here:

brainly.com/question/25573309

#SPJ1

You might be interested in
The Sun's surface temperature is closest to _____.
garik1379 [7]
The answer is b because the sun's surface temperature is 5,778 K.
5 0
3 years ago
Read 2 more answers
A manometer is used to measure the air pressure in a tank. The fluid used has a specific gravity of 1.25, and the differential h
Sloan [31]

Answer:

77.88 lbm/ft³

Explanation:

Given,

Specific gravity, SG = 1.25

Density of water, ρ = 62.30 lbm/ft³

density of the fluid =

   = S.G x ρ_{water}

   = 62.30 x 1.25

   = 77.88 lbm/ft³

Density of the fluid is equal to 77.88 lbm/ft³

3 0
3 years ago
Why is it that I feel alone
lesya [120]

Answer: quarantine

Explanation:

5 0
3 years ago
Read 2 more answers
What do we measure energy in
Goshia [24]
Energy is measured by joule(j)
3 0
3 years ago
Read 2 more answers
What are similarities between the Rorschach inkblots and the TAT test?
Luden [163]
The Rorschach inkblots and the TAT (Thematic Appreciation Test) both rely on providing the subject with ambiguous visual stimuli and assessing the subject's state of mind using the subject's interpretation of the stimuli.
Both use cards, although not all of the cards are used in the TAT. Moreover, the TAT cards contain sketches, while the Rorschach inkblots contain patterns of ink.
5 0
3 years ago
Other questions:
  • With what average speed must you drive your car if your average speed for the entire 23 km is to be 25 km/h?
    10·1 answer
  • How much water remains unfrozen after 62.2 kJ is transferred as heat from 364 g of liquid water initially at its freezing point?
    6·1 answer
  • Hydraulic systems utilize Pascal's principle by transmitting pressure from one cylinder (called the primary) to another (called
    7·1 answer
  • In this also please
    6·1 answer
  • What are chlorofluorocarbons and what impact do they have on the atmosphere?
    8·1 answer
  • Please help.: Sliding from left to right in a straight line on a horizontal steel surface, an aluminum block weighing 20 newtons
    12·2 answers
  • How does the number of each type of particle in a sodium ion compare with the number of each type of particle in a sodium atom?
    12·1 answer
  • Would water, steam, granite, or lead make the best thermal insulator? A thermal insulator is a substance that requires a lot of
    6·1 answer
  • How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is
    6·1 answer
  • what current flows through a 2.54cm diameter rod of pure silicon that is 20.0cm long ,when 1.00x10000V is applied to it
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!