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
Maslowich
3 years ago
12

12) A horizontal force of 200 N is applied to move a 55-kg cart (initially at rest) across a 10 m level surface. What is the fin

al speed of the cart? [hint: use work – energy principle] [3 marks]
Physics
1 answer:
WINSTONCH [101]3 years ago
3 0

Hi there!

We can use the following:

W = ΔKE = F · d

Find the work done on the cart:

W = 200 · 10 = 2000 J

Now, this is equal to the change in kinetic energy of the object. Its initial kinetic energy is 0 J since it starts from rest, so:

2000J = KEf - KEi

KE is given as:

KE = \frac{1}{2}mv^2

2000J = 1/2(55)v²

4000 = 55v²

√(4000/55) = 8.53 m/s

You might be interested in
What is lower body strength
Lerok [7]
Lower body strength is the ability of the body to exert a maximum force against an object external to the body in one maximum effort of the lower body muscles. Gluteals are muscles that make up the buttocks. ... Their roles are to facilitate hip extension and lift the leg to the side.
3 0
3 years ago
Read 2 more answers
A car goes by 20 m/sec for 3 minutes. Find traveled distance?
torisob [31]
60 miles

explanation: 20•3=60

hope this helps
4 0
4 years ago
Read 2 more answers
It is hot outside, and the air conditioning has been turned on inside two buildings. Building A's walls contain insulation, but
Vilka [71]

Answer:

building A because the insulation will keep the air in the building while more so building b will let the air flow out because there is no insulation

Explanation:

3 0
3 years ago
Gold-leaf electroscope uses
Kruka [31]
-identifies an electric charge 
-it can identify its polarity (positive or negative) if you compare it to a charge that you already know
-can identify the magnitude of a charge (how big of a charge it is)
7 0
4 years ago
How do magnetic forces repel or attract?
Lerok [7]

“Magnets are surrounded by an invisible magnetic field that is made by the movement of electrons, the subatomic particles that circle the nucleus of an atom”



“Every magnet has both a north and a south pole. When you place the north pole of one magnet near the south pole of another magnet, they are attracted to one another. When you place like poles of two magnets near each other (north to north or south to south), they will repel each other.”
3 0
3 years ago
Other questions:
  • A man stands on the roof of a building of height 14.0 m and throws a rock with a velocity of magnitude 26.0 m/s at an angle of 2
    9·1 answer
  • A rock is dropped from the top of a tall building. How high is the building if it takes 3.25seconds for the rock to strike the g
    12·1 answer
  • Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +6q. Sphere B carries a charge of -q. Sphere C
    8·1 answer
  • HELP ASAP PLEASE HELP!
    8·2 answers
  • A surface receiving sound is moved from its original position to a position three times farther away from the source of the soun
    8·1 answer
  • what is the resistance of a 20.0 meter long tungsten rod with a cross sectional area of 1.00 times 10^-4 meter^2 at 20C
    5·1 answer
  • Which pieces of safety equipment should be worn if you are working with sodium hydroxide, a strong base, in a chemistry lab?
    8·2 answers
  • Which is most likely a covalent compound?<br><br> LiF<br> MgS<br> NH3<br> CaCl2
    5·2 answers
  • When balls roll out of sight, do they disappear or play hopscotch? Or maybe……. Just maybe…… they play hide and seek. I’m not rea
    6·1 answer
  • What mathematical formula is needed to determine the student's displacement from point A to C? (Hint: think
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!