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12 Nov 2019
A feather which has a mass of 3g is dropped from a height of 2 meters above the ground. When it reaches the ground, its speed is 1.2 m/s. Calculate the initial amount of gravitational potential energy of the feather, the kinetic energy of the feather right before it hits the ground, the amount of mechanical energy that was lost as the feather fell to the ground, and the average force of air resistance on the feather. Then, draw a diagram of the feather which includes the following information: the initial gravitational potential energy of the feather, the kinetic energy of the feather right before it hits the ground, and the amount of thermal energy acquired by the feather and the atmosphere.
A feather which has a mass of 3g is dropped from a height of 2 meters above the ground. When it reaches the ground, its speed is 1.2 m/s. Calculate the initial amount of gravitational potential energy of the feather, the kinetic energy of the feather right before it hits the ground, the amount of mechanical energy that was lost as the feather fell to the ground, and the average force of air resistance on the feather. Then, draw a diagram of the feather which includes the following information: the initial gravitational potential energy of the feather, the kinetic energy of the feather right before it hits the ground, and the amount of thermal energy acquired by the feather and the atmosphere.
Beverley SmithLv2
15 Aug 2019
