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3 years ago

A ball is dropped from a height of 180m- Calculate the velocity of the ball when it strikes the ground

Physics

2 answers:

gayaneshka [121]3 years ago

6 0

Answer:

6s , 60mls

Explanation:

hope this helps love

krek1111 [17]3 years ago

4 0

Answer:

0m/s

Explanation:

When the object strikes the ground, it then becomes in uniform motion and when an object is in uniform motion, the velocity is 0

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Consider a block sliding down a ramp whose motion is opposed by frictional forces. The total energy of this system is modeled by

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If a system absorbs 155.0 kJ of heat from its surroundings and the system does 45.0 kJ of work on its surroundings, what is the

Ede4ka [16]

The change in the internal energy of the system is 110 kJ.

<h3>What is internal energy?</h3>

Internal energy is defined as the energy associated with the random, disorder motions of molecules.

calculate the change in internal energy, we apply the formula below.

Formula:

ΔU = Q-W.................... Equation 1

Where:

ΔU = Change in internal energy
Q = Heat absorbed from the surroundings
W = work done by the system

From the question,

Given:

Q = 115 kJ

W = 45. 0 kJ

Substitute these values into equation 1

ΔU = 155-45

ΔU = 110 kJ

Hence, The change in the internal energy of the system is 110 kJ.

Learn more about change in internal energy here: brainly.com/question/4654659

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3 years ago

Which of the following processes charges an object by friction

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4 years ago

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Which would you use with a circuit to determine if a magnet was moving in close proximity to the circuit?

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In a swimming meet, the swimmers swim a total of 8 laps of a 50-meter-long swimming pool. What is the distance traveled by a swi

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Answer:

The swimmer has a distance traveled of 800 meters.

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Explanation:

A lap is a round trip made by a swimmer in the pool, so that the distance traveled by swimmer is sixteen times the length of the swimming pool. That is:

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A swimmer has a distance traveled of 800 meters.

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3 years ago