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
DanielleElmas [232]
4 years ago
8

Remembering that Force = mass x acceleration. A Football player kicks a ball with a mass of 0.42 kg. The average acceleration of

the football was 14.8 m/s^2. How much force did the kicker supply to the football?
A) 35.24 m/s^2

B) 6.22 N

C) 35.24 N

D) 6.22 m/s^2
Physics
1 answer:
Anna35 [415]4 years ago
6 0

B) 6.22 N

<em>Is your answer hun! have a great day:3</em>

You might be interested in
An infinitely long cylinder of radius R has linear charge density λ. The potential on the surface of the cylinder is V0, and the
tamaranim1 [39]

Answer:

V = V_0 - (lamda)/(2pi(epsilon_0))*ln(R/r)

Explanation:

Attached is the full solution

5 0
3 years ago
Building a mass transit system is likely to have which of the following effects
iren2701 [21]
Well pollution will most likely go down since people won't be driving in there own cars<span />
5 0
3 years ago
A person can survive a feet-first impact at a speed of about 12 m/s (27 mi/h) on concrete, 15 m/s (34 mi/h) on soil, and 34 m/s
PilotLPTM [1.2K]

Answer:

Different surfaces have different impact force during collision which depends on the time it takes the person to come to rest after collision.

Explanation:

Given;

speed on concrete = 12 m/s (27 mi/h)

speed on soil = 15 m/s (34 mi/h)

speed on water = 34 m/s (76 mi/h)

The impact force on this person during collision is rate of change of momentum;

F = \frac{\delta P}{\delta t}

During collision, the force exerted on this person depends on how long the collision lasts; that is, how long it takes for this person to come to rest after collision with each of the surfaces.

The longer the time of collision, the smaller the force exerted by each.

It takes shorter time for the person to come to rest on concrete surface than on soil surface, also it takes shorter time for the person to come to rest on soil surface than on water surface.

As a result of the reason above, the force exerted on the person during collision by the concrete surface is greater than that of soil surface which is  greater than that of water surface.

8 0
4 years ago
A motor does 20. joules of work on a block, accelerating the block vertically upward. Neglecting friction, if the gravitational
Eva8 [605]
The motor does 20 J of work on the block, it means that the total mechanical energy of the block has increased by 20 J. But the increase in total mechanical energy is equal to the sum of the increases in potential energy and kinetic energy:
\Delta E = \Delta U + \Delta K
So, if the gravitational potential energy has increased by 15 J, the kinetic energy has increased by
\Delta K = \Delta E - \Delta U = 20 J - 15 J= 5 J
4 0
3 years ago
What is the work done by a car's braking system when it slows the 1500-kg car from an initial speed of 96 km/h down to 56 km/h i
kondor19780726 [428]

Answer:

-352.275KJ

Explanation:

We are given that

Mass of car=1500kg

Initial speed of car =u=96 km/h=96\times \frac{5}{18}=26.67m/s

1km/h=\frac{5}{18}m/s

Final speed of car=v=56km/h=56\times \frac{5}{18}=15.56m/s

Distance traveled by car=s=55m

We have to find the work done by the car's braking system.

Using third equation of motion

v^2-u^2=2as

(15.56)^2-(26.67)^2=2a(55)

-469.18=110a

a=\frac{-469.18}{110}=-4.27m/s^2

Where negative sign indicates that velocity of car decreases.

Work done by a car's barking system=w=F\times s=ma\times s

Work done by a car's barking system=1500\times -4.27\times 55=352275J

Work done by a car's barking system=-\frac{352275}{1000}=-352.275KJ

1KJ=1000J

Where negative sign indicates that work done in opposite direction of motion.

7 0
4 years ago
Read 2 more answers
Other questions:
  • Which is the best predictor of the radioactive nature of an isotope?
    12·2 answers
  • A train, starting from rest, accelerates along the platform at a uniform rate of 0.6 m/s2. a passenger standing on the platform
    13·2 answers
  • What are the three main branches of science
    11·2 answers
  • Is an apple hanging from a tree konetic energy or potential energy
    10·2 answers
  • A box with a weight of 50 N rests on a horizontal surface. A person pulls horizontally on it with a force of 15 N and it does no
    15·1 answer
  • If a horizontal force of 15N applied to a 50N block towards the east is just enough to cause that block to move
    10·1 answer
  • An electric field is applied to a solution containing bromide ions. As a result, the ions move through the solution with an aver
    15·1 answer
  • HELP ASAP ILL DO ANYTHING.!!!!!!
    11·2 answers
  • What do control rods do in a nuclear reactor?
    6·1 answer
  • The vertical displacement of the wave is measured from the what? And what is the term for vertical displacement?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!