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leva [86]
3 years ago
11

How does gravity, inertia and friction play a role in throwing a ball

Physics
1 answer:
stellarik [79]3 years ago
3 0

Answer:

The role of gravity, inertia and friction play different roles when a ball s thrown such as the following;

The thrown ball (which was initially at rest) is given its inertia by the force delivered to it (the ball) by the hand of the thrower of the ball

Force applied to the hand by the thrower of the ball has to have a balancing equal and opposite force (reaction force) for the person to remain in position (not skidding or falling over)

The reaction force mentioned above is transmitted from the hands through the body to the legs which rests on the ground

The leg pushes in the opposite direction in which the ball is thrown but due to combination of the gravity pull which is the weight which acts downward and the friction  resistance which acts sideways and increases proportionally with the weight of the thrower due to gravity, the reaction force in the leg is not able to overcome the frictional resistance force of the leg and the thrower remains upright while the throwing of the ball is successful

Gravity will then act on the ball to limit the distance traveled such that the ball will not wander away and could be directed at  desired target

Explanation:

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A man in a lift is moving upwards in a constant speed.the weight of the man is W.Acc
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Answer:

Normal force=mg

Explanation:

The reaction force of weight is the normal force.

in order to find the normal for we need to write all the forces and set it equal to the net force:

N-mg=ma (since it is a constant speed the a=0)

N=mg

3 0
3 years ago
The electrical generators can provide 1.5 × 109 W of power for a maximum of 5 hours. Calculate the maximum energy that can be tr
hoa [83]

The maximum energy that can be transferred by the electrical generator is  2.7×10¹³ Joules.

We can use the equation of electric power and electric energy.

Electric Power: This can be defined as the ratio of the electric energy to the time of electrical equipment.

⇒ Formula

  • P = E/t............... Equation 1

⇒Where:

  • P =  Maximum electric power
  • E =  Maximum electric Energy
  • t = time.

make E the subject of the equation

  • E = Pt................. Equation 2

From the question,

⇒ Given:

  • P = 1.5×10⁹ W
  • t = 5 hours = (5×60×60) seconds = 18000 seconds = 1.8×10⁴ s

⇒ Substitute these values into equation 2

  • E = (1.5×10⁹)(1.8×10⁴)
  • E = 2.7×10¹³ Joules.

Hence, the maximum energy that can be transferred by the electrical generator is  2.7×10¹³ Joules.

Learn more about Electric energy here: brainly.com/question/21222010

3 0
3 years ago
Read 2 more answers
What is the acceleration of a car that maintains a constant velocity of 100km/h for 10 s
Mademuasel [1]
A constant velocity means the acceleration is zero.
4 0
3 years ago
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What’s the answer to the summary ?
Talja [164]

Because of the different speeds..

7 0
3 years ago
Describe the nature of sunlight using the following: wavelength, electromagnetic spectrum, visible light, photons.
kogti [31]

Answer:

due to the effect of gravity begins thermonuclear fusion processes, in these processes energy is released in the form of electromagnetic radiation

Explanation:

The Sun is a star of great size, which due to the effect of gravity begins thermonuclear fusion processes, in these processes energy is released in the form of electromagnetic radiation.

This radiation crosses the different layers of the Sun and escapes from it in the form of light that is emitted throughout the radiation spectrum, due to the temperature reached by the Sun about 5500K the most likely radiation is around 5500 nm corresponding to the green- yellow of the visible spectrum, but the entire spectrum is emitted with different intensity according to Stefan's law

     

In quantum mechanics this spectrum can also be analyzed as the emission of particles called photons, where each one is characterized by an energy and has a moment equal to zero, the energy of these photons is related to their frequency by the Planck equation

                   E = h f

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3 years ago
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