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
marshall27 [118]
3 years ago
6

A sled of mass 10 kg slides along the ice. it has an initial speed of 2 m/s but stops because of friction. How much work is done

by friction?
A. 0 J
B. -20 J
C. -10 J
D. 20 J
Physics
2 answers:
NeX [460]3 years ago
6 0

Answer: The correct answer is option B.

Explanation:

Mass of the sled = 10 kg

Initial speed of the sled = 2 m/s

Kinetic energy of the sled = \frac{1}{2}mv^2

\frac{1}{2}\times 10 kg\times (2 m/s)^2=20 Joules

Work done by the sled = 20 joules

The work done by the friction will be in opposite direction and equal to the magnitude of the work done of the sled that - 20 J.

Hence, correct answer is option B.

Alexandra [31]3 years ago
5 0

Answer:-20

Explanation:

You might be interested in
What happens to an object after being transported to three planets in the solar system?
alukav5142 [94]
The weight changes but the mass will stay the same.
6 0
2 years ago
Reflection of the images example
NISA [10]

Answer:

reflection of water ,sound and water waves etc

8 0
3 years ago
Why do mirrors form inverted images?
marysya [2.9K]

Answer:

Explanation:

The image is real light rays actually focus at the image location). As the object moves towards the mirror the image location moves further away from the mirror and the image size grows (but the image is still inverted).

3 0
3 years ago
Read 2 more answers
Taco Bell sells 6 Tacos for $9.00. Del Taco sells 4 tacos for $8.00. is a better deal, because it costs less per taco.
steposvetlana [31]

Answer:

I'd say taco bell is a better deal, because you get more tacos.

Explanation:

but that's just what I think

8 0
3 years ago
Read 2 more answers
PLEASE HELP ME
pogonyaev

Answer:

The answer is Insulator, Conductor

Explanation:

A/An Insulator is a material in which charges will not move easily, whereas a/an Conductor is a material that allows charges to move about easily

5 0
2 years ago
Other questions:
  • What's the formula to find out power
    12·1 answer
  • If the frequency of a system undergoing simple harmonic motion doubles, by what factor does the maximum value of acceleration ch
    5·1 answer
  • What happens when the moon faces one side of the earth?
    12·1 answer
  • A "homemade" capacitor can be built by placing a sheet of paper between two foil. Imagine that the sheet of paper is 21 cm x 30
    8·1 answer
  • Please can i have help with this question ​
    12·1 answer
  • Tracy stands on a skateboard and tosses her backpack to her friend who is standing in front of her. Which best describes the acc
    13·1 answer
  • How many photons are emitted per second by a He−Ne laser that emits 1.5 mW of power at a wavelength λ=632.8nm. What is the frequ
    14·1 answer
  • An electric fan is turned off, and its angular velocity decreases uniformly from 550 rev/min to 180 rev/min in a time interval o
    6·1 answer
  • Two identical small metal spheres with q1 > 0 and |q1| > |q2| attract each other with a force of magnitude 72.1 mN when se
    12·1 answer
  • A ball is thrown so that its initial vertical and horizontal components of velocity are 30 m/s and 15 m/s, respectively. Estimat
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!