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
vesna_86 [32]
2 years ago
7

A 4.4 kg marble (really big heavy marble) is accelerating down an incline. When it reaches level ground it slows down to a stop

in 1.27 seconds due to friction.
A. If the deceleration of the marble on level ground was 1.74 m/s/s, how much frictional force was present?


B. Calculate the velocity of the marble when it initially reached level ground. ​
Physics
1 answer:
KengaRu [80]2 years ago
4 0

#A

Mass=4.4kg

acceleration=-1.74m/s^2

Use newtons second law

\\ \rm\longmapsto Force=ma

\\ \rm\longmapsto Force=4.4(-1.74)

\\ \rm\longmapsto Force=-7.656N

#B

initial velocity=u

Final velocity=v=0

Acceleration=a=-1.74m/s^2

Time=t=1.27s

\\ \rm\longmapsto a=\dfrac{v-u}{t}

\\ \rm\longmapsto u=v-at

\\ \rm\longmapsto u=0-(-1.74)(1.27)

\\ \rm\longmapsto u=1.74(1.27)

\\ \rm\longmapsto u=2.2m/s

You might be interested in
If you decrease the distance between successive crests of a wave, this changes
AlexFokin [52]
<span>The _______ is the the distance between two crests or two troughs on a transverse wave. It is also the distance between compressions or the distance between rarefactions on a longitudinal wave.</span>
3 0
3 years ago
Exercise can help prevent?
Sedaia [141]

health conditions and diseases


8 0
3 years ago
Read 2 more answers
Find the net charge of a system consisting of 206 electrons and 161 protons. Express your answer using two significant figures.
kondaur [170]

Answer:

-72\times 10^{-19}C[/tex]

Explanation:

Both electron and proton have the same amount of charge but signs are opposite , electron contains negative charge and proton contain positive charge

Charge on 1 electron = -1.6\times 10^{-19}C

So charge on 206 electron =-206\times 1.6\times 10^{-19}C

Charge on 1 proton = -1.6\times 10^{-19}C

So charge on 161 electron =-106\times 1.6\times 10^{-19}C

So charge of the system = (-206+161)\times 1.6\times 10^{-19}C

=-72\times 10^{-19}C

5 0
3 years ago
Edward with it gathering physical evidence at the scene of a crime. He finds a fingerprint pressed into the wax of the candle. W
muminat

Answer:trace

Explanation:

3 0
3 years ago
Read 2 more answers
If you drag a sled on the ground, what does the sled experience?
Ilya [14]
The sled experiences friction against the ground
3 0
3 years ago
Other questions:
  • Why does the moons gravity affect the earth so much
    9·2 answers
  • What is the middle layer of earth called
    5·2 answers
  • Which kind of star is most likely to spend the longest time on the main sequence?
    9·2 answers
  • A point charge with charge q1 = 3.40 μC is held stationary at the origin. A second point charge with charge q2 = -4.90 μC moves
    10·1 answer
  • Consider a system of a cliff diver and the earth. the gravitational potential energy of the system decreases by 28,000 j as the
    8·1 answer
  • When padding a canoe you push the water backwards with the paddle which in turn will push you forward.which law of motion is bei
    15·2 answers
  • 9. Electron travelling though two horizontal plates
    9·1 answer
  • Plains and mountains are examples of formed by processes that shape Earth's surface.
    12·1 answer
  • Two rocks, A and B, are thrown horizontally from the top of a cliff. Rock A has an initial speed of 10 meters per second and roc
    14·1 answer
  • a 5.0-ft woman wishes to see a full length image of herself. what is the minimum length mirror required?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!