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
oksano4ka [1.4K]
3 years ago
10

A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him. The

mass of the losing player + equipment is 90.0 kg, and he is accelerating at 1.20m/s2 backward. What is the force of friction between the losing player’s feet and the grass?
Physics
1 answer:
uysha [10]3 years ago
8 0

Answer:

f = 692 N

Explanation:

given data:

f =800N

a =1.2 m s^{2}

m= 90 kg

from newton's second law

net force F_{net} =\sum F = F_1 +F_2 +..... = ma

therefore we have from above equationF_{net} = F -f = ma

ma =F - f

putting all value to get force of friction

1.2*90 = 800 - f

f = 692 N

You might be interested in
Two wheel gears are connected by a chain. The larger gear has a radius of 8 centimeters and the smaller gear has a radius of 3 c
dezoksy [38]

Answer:

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

Explanation:

As we know that the small gear completes 24 revolutions in 20 seconds

so the angular speed of the smaller gear is given as

\omega = 2\pi\frac{24}{20}

\omega = 2.4\pi rad/s

Now we know that the tangential speed of the chain is given as

v = r \omega

so we have

v = (3 cm)(2.4\pi)

v = 7.2 \pi cm/s

v = 432\pi cm/min

Since both gears are connected by same chain so both have same linear speed and hence correct answer will be

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

8 0
3 years ago
An electromagnet is created using a battery, an insulated copper wire and an iron nail. The wire is wrapped around the nail 20 t
Molodets [167]
I think adding more loops would strengthen it
4 0
3 years ago
A scientist at a space research center is doing research on near-Earth objects and determining the kinetic energy of a theoretic
Marysya12 [62]
<span>its kinetic energy is 7350kJ 
</span>

Kinetic energy is given as = \frac{1}{2} mv^{2}

Now, m = 12 gms = 0.012 kg
 And, velocity = 35 kilometers/second = 35000 m/sec

Kinetic energy is given as = \frac{1}{2} 0.012 kg * 35000*35000 m/[tex] s^{2}
                        = 6 10^{-2}×1225 ×10^{6} m/s^{2} 
                        = 7350 kJ
6 0
4 years ago
Read 2 more answers
15 and Brainlyest if possible (Someone else answers)
romanna [79]
An object with volume greater than it mass. to account less density and thus it will float
5 0
3 years ago
An electric current always produces a magnetic field that is ______ to the field. A. perpendicular B. parallel C. at a 37° angle
Aleks04 [339]

Answer:perpendicular

Explanation:

8 0
3 years ago
Other questions:
  • What causes a bolt of lightning?
    9·2 answers
  • A 11,000-watt radio station transmits at 880 kHz. Determine the number of joules transmitted per second.
    12·1 answer
  • Why do astronomers use the word on to describe angles on the sky rather than angles in the sky?
    6·1 answer
  • Which is an example of an unintentional injury? A student decides to cut herself. Two people have a domestic dispute that leads
    5·1 answer
  • A test charge of +4 µC is placed halfway between a charge of +6 µC and another of +2 µC separated by 20 cm. (a) What is the magn
    12·1 answer
  • A 1000-kilogram car traveling with a velocity of 20. meters per second decelerates uniformly at -5.0 meters per second2 until it
    9·1 answer
  • The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 4.5 wb from 13.0 wb in a time of 0.072 s. th
    13·1 answer
  • A truck is traveling with 50,000 J of kinetic energy. It
    6·1 answer
  • Which statement describes a climate condition?
    13·1 answer
  • Which statement describes an example of destructive interference?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!