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
garri49 [273]
3 years ago
6

How does the momentum of a 75 kilogram stationary football player compare with that of a 70 kilogram player moving at a velocity

of 6 meters/second?
Physics
2 answers:
Lostsunrise [7]3 years ago
7 0
Momentum = Mass * velocity

For the stationary football player, his velocity = 0

Momentum = 75 kg * 0 = 0 kgm/s

The second player =  70kg * 6 m/s = 420 kgm/s

The first player has no momentum, the second player has a momentum of 420 kgm/s
pashok25 [27]3 years ago
6 0
Momentum of an object = (its mass) x (its speed) .

Since speed is a factor of momentum, an object that
isn't moving doesn't have any.

-- The moving player has momentum. 

-- The stationary one doesn't.
You might be interested in
Use the SI prefixes in Table 3 of this chapter to convert these hypothetical units of measure into appropriate quantities: a. 10
8090 [49]
A. 10 rations = 1 deca-ration.

b. 2000 mockingbirds = 2 x 10³ = 2 kilo-mockingbirds.

c. 10⁻⁵ phones = 1 micro-phones.

d. 10⁻⁹ goats = 1 nano-goats.

e. 1018 miners = 1.018 x 10³ = 1.018 kilo-miners.
4 0
3 years ago
Assume that the blocks are accelerating, and the x components of their accelerations at a certain moment are a1x and a2x. find t
Serga [27]

we know that center of mass is given as

r = (m₁ r_{1x} + m₂ r_{2x})/(m₁ + m₂)

taking derivative both side relative to "t"

dr/dt = (m₁ dr_{1x}/dt + m₂ dr_{2x}/dt)/(m₁ + m₂)

v = (m₁ v_{1x} + m₂ v_{2x})/(m₁ + m₂)

taking derivative again relative to "t" both side

dv/dt = (m₁ dv_{1x}/dt + m₂ dv_{2x}/dt)/(m₁ + m₂)

a= (m₁ a_{1x} + m₂ a_{2x})/(m₁ + m₂)

3 0
3 years ago
Read 2 more answers
Help me please Which of the following statements best describes the atoms and molecules that make up a glass
Nataliya [291]

Answer:

The correct option is;

The atoms and molecules of the liquid water are moving, while the atoms and molecules of the glass are not moving

Explanation:

Matter that exist in the liquid or gaseous state consist of molecules that move freely about in the entire containing medium for gas, while the molecules move freely  in the portion of the container occupied by the fluid in the case of liquid fluids

However, the molecules of a solid are fixed within the current shape of the solid and are only free to vibrate within a fixed location and the allow the passage of subatomic particles such as electrons

As such, the glass cup being a solid, consists of molecules fixed in space, while the liquid water consists of molecules which can translate within the portion of the volume of the glass filled with the water.

7 0
3 years ago
How do I calculate speed, velocity, and acceleration? I need the formulas too
vodomira [7]
Speed is the secular unit, which means it only measures "how fast it goes."
speed= \frac{distance}{time}
Velocity is a victory unit, which means it measures "both how fast it goes AND the direction."
velocity= displacement/time
Acceleration is the change of velocity over time. 
acceleration =  \frac{change in velocity}{time}
5 0
3 years ago
To complete a project, 200,000 Joules of work is needed. The time taken to complete the project is 20 seconds. How much power is
Leno4ka [110]

Answer:

10,000

Explanation:

200,000/20 = power needed

200,000/20 = 10,000

Hope this Helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • A small asteroid with a mass of 1500 kg moves near the earth. At a particular instant the asteroid’s velocity is ⟨3.5 × 104, −1.
    12·1 answer
  • List 3 examples of transition metals
    10·1 answer
  • A plane is flying 2400 miles from a to
    7·1 answer
  • 4 Points
    9·2 answers
  • Explain what physicists mean when they say that the de Broglie wavelength relates to the probability distribution wave function.
    13·1 answer
  • The acceleration due to gravity on Earth is 9.81 m/s² [down]. A hockey puck was launched from the ice with a velocity of 26.9 m/
    15·1 answer
  • Which phrase best completes the diagram?
    10·2 answers
  • What is the wavelength of a 6.00*10^2 Hz sound wave in air at 20C
    5·1 answer
  • What is the horse power of an electric motor which can do by 1250 joule of work in 5 seconds​
    5·1 answer
  • How long does it take the baton to complete one spin
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!