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
iren2701 [21]
3 years ago
7

What is the direction of friction if a ball is rolling on the ground?

Physics
1 answer:
morpeh [17]3 years ago
3 0
The direction is the same as the direction the ball is moving in. Because of the rolling of the ball, the direction of movement of the surface of the ball is opposite the overall direction of the ball. Since friction will oppose the direction of movement of the surface of the ball, it is in the same direction as the net direction of movement of the ball.
You might be interested in
Which of the following statements is true regarding the constructive interference diagram shown below? Select all that apply.
yulyashka [42]

Answer:

I believe its B and C

Explanation:

<u><em>If I'm wrong please tell me so I can correct my answer.</em></u>

<u><em /></u>

6 0
2 years ago
Read 2 more answers
An 80- quarterback jumps straight up in the air right before throwing a 0.43- football horizontally at 15 . How fast will he be
lord [1]

Answer:

a)

the quarterback will be moving back at speed of 0.080625 m/s

b)

the distance moved horizontally by the quarterback is 0.0241875 m or 2.41875 cm

Explanation:

Given the data in the question;

a)

How fast will he be moving backward just after releasing the ball?

using conservation of momentum;

m₁v₁ = m₂v₂

v₂ = m₁v₁ / m₂

where m₁ is initial mass ( 0.43 kg )

m₂ is the final mass ( 80 kg )

v₁ is the initial velocity  ( 15 m/s )

v₂ is the final velocity

so we substitute

v₂ = ( 0.43 × 15 ) / 80

v₂ = 6.45 / 80

v₂ = 0.080625 m/s

Therefore, the quarterback will be moving back at speed of 0.080625 m/s

b) Suppose that the quarterback takes 0.30 to return to the ground after throwing the ball. How far d will he move horizontally, assuming his speed is constant?

we make use of the relation between time, distance and speed;

s = d/t

d = st

where s is the speed ( 0.080625 m/s )

t is time ( 0.30 s )

so we substitute

d = 0.080625 × 0.30

d = 0.0241875 m or 2.41875 cm

Therefore, the distance moved horizontally by the quarterback is 0.0241875 m or 2.41875 cm

5 0
3 years ago
What is numbers 2 and 4? Please help, and many thanks to those who do chose to help.
Elan Coil [88]

Answer:

2. 6 km/h

4. 150 miles/h

5 0
3 years ago
Magnetic induction is used for what?
DochEvi [55]
For radio broadcasting, in electricity meters, in any generator. 
4 0
3 years ago
Which form of energy does the motor convert most of its electric energy into?
aev [14]

Answer:

Kinetic energy

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the magnification of an astronomical telescope whose objective lens has a focal length of 71 cm and whose eyepiece has a
    8·1 answer
  • What are two reasons a common measuring system is important?
    10·1 answer
  • Can someone tell me the answer to this?
    13·2 answers
  • Which one of the following is a benefit to having good balance?
    5·1 answer
  • In a photoelectric effect experiment, it is observed that violet light does not eject electrons from a particular metal. Next, r
    15·1 answer
  • A car is being pulled by a tow truck. What is the car's mass if the net force on the car is 5400 N and it has an acceleration of
    14·1 answer
  • A sample of Iron has a mass of 46.8 grams and a volume of 6 cm 3. what is the density of iron?
    15·1 answer
  • 5. What things would settle in pond water, making it turn to land (terrestrial) succession?
    7·1 answer
  • The north pole of one bar magnet is near the south pole of another bar
    7·1 answer
  • The engine of a 550kg car is producing a net force of 11,000N. What is its acceleration?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!