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Savatey [412]
3 years ago
9

Determine the apple's kinetic energy, KE, the gravitational potential energy of the system, gravity, and the total mechanical en

ergy of the system, E, when the apple's height above the ground is 3.0 m
Physics
1 answer:
guajiro [1.7K]3 years ago
6 0

Answer:

7.45

Explanation:

At 3.0 m PE = m*g*3.0, KE = m*g*(4.0 - 3.0)

At 2.0 m PE = m*g*2.0, KE = m*g*(4.0 - 2.0)

At 3.0 m PE = m*g*1.0, KE = m*g*(4.0 - 1.0)

At 0 m PE = 0, KE = m*g*h = total energy = 7.45 J

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a=368.97\ m/s^2

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\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\\t=\sqrt{\dfrac{2\theta}{\alpha }} \\\\t=\sqrt{\dfrac{2\times 87.96}{7}} \\\\t=5.01\ s

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