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diamong [38]
3 years ago
15

The diagram shows a ball falling toward Earth in a vacuum.

Physics
2 answers:
Sloan [31]3 years ago
8 0

Answer:

c

Explanation:

murzikaleks [220]3 years ago
7 0

Answer: C

Explanation: I took the quiz on A p e x

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The period of time required for the moon to complete a cycle of phases is called the ________ month.
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A 2 300-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 3.00 m before coming into contact
Mashcka [7]

Answer:

433903.8 N

Explanation:

From work energy theorem, the total work done is equivalent to change in kinetic energy. Kinetic energy is depedant on speed and since pile drive finally comes to rest, then final velocity is zero. Also, its initial velocity is not given. Therefore, the sum of work due to gravity and beam equals to zero. Work due to gravity is product of mass of pile driver, acceleration due to gravity and height while work due to beam is a product of force and distance. Substituting the given values then

2300*9.81*3+(F*0.156)=0

F=-433903.84615384615384615384615384615384615 N

Approximately, the magnitude of force is 433903.8 N and it acts upwards

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