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Alisiya [41]
2 years ago
11

What is the momentum of a 100-kilogram fullback carrying a football on a play at a velocity of 3.5. m/sec

Physics
2 answers:
podryga [215]2 years ago
7 0

Answer: 350 kg m/s

Explanation: Momentum can be defined as "mass in motion."

P=MV

P = momentum

M=mass

V=velocity

In the question, we were given;

M= 100-kilogram

V= 3.5. m/sec

Therefore,

Momentum= Mass * velocity

Momentum= 100kg * 3.5 m/sec

Momentum= 350kg.m/sec.

Olenka [21]2 years ago
6 0

Answer:

350 kg m/s

Explanation:

Momentum = mass × velocity

p = mv

p = (100 kg) (3.5 m/s)

p = 350 kg m/s

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You drop a 0.375 kg ball from a height of 1.37 m. It hits the ground and bounces up again to a height of 0.67 m. How much energy
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2.57 joule energy lose in the bounce .

<u>Explanation</u>:

when ball is the height of 1.37 m from the ground  it has some gravitational potential energy with respect to hits the ground  

Formula for gravitational potential energy given by  

Potential Energy = mgh

Where ,

m = mass  

g = acceleration due to gravity  

h = height

Potential energy when ball hits the ground

m= 0.375 kg

h = 1.37 m

g = 9.8 m/s²

Potential Energy = 0.375\times9.8\times1.37

Potential Energy = 5.03 joule

Potential energy when ball bounces up again

h= 0.67 m

Potential Energy = 0.375\times0.67\times9.8

Potential Energy = 2.46 joule

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2.57 joule energy lose in the bounce

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3 years ago
Please hurry Describe why electric currents can be dangerous
konstantin123 [22]

Answer:

Cardiac Arrest, burns, and nerve damage.

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Basically, the main risk is cardiac arrest, caused by the electric current interfering with the normal operation of the heart muscle. Other possible damages are burns due to the electric energy vaporizing the water inside the cells, and nerve damage caused by excessive current through the nerves.

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2 years ago
If an object is projected upward with an initial velocity of 127 ft per? sec, its height h after t seconds is h equals negative
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h = -16t^2 + 127t

We substitute 55 seconds to t and obtain,

h = -16(55)^2 + 127(55)
h = - 41415
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3 years ago
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