Question

In: Physics

A 0.24 kg apple falls from a tree to the ground, 4.0m below. Ignore air resistance....

A 0.24 kg apple falls from a tree to the ground, 4.0m below. Ignore air resistance. Take ground level to be y=0.

A) Determine the apple's kinetic energy, K, the gravitational potential energy of the system, U, and the total mechanical energy of the system, E, when the apple's height above the ground is 4.0 m.

B) Determine the apple's kinetic energy, K, the gravitational potential energy of the system, U, and the total mechanical energy of the system, E, when the apple's height above the ground is 3.0 m.

C) Determine the apple's kinetic energy, K, the gravitational potential energy of the system, U, and the total mechanical energy of the system, E, when the apple's height above the ground is 2.0 m.

D) Determine the apple's kinetic energy, K, the gravitational potential energy of the system, U, and the total mechanical energy of the system, E, when the apple's height above the ground is 1.0 m.

E) Determine the apple's kinetic energy, K, the gravitational potential energy of the system, U, and the total mechanical energy of the system, E, when the apple's height above the ground is 0 m

Solutions

Expert Solution


Related Solutions

An apple falls from a tree and feels no air resistance. As it is falling, which...
An apple falls from a tree and feels no air resistance. As it is falling, which of the following statement is correct? The apple’s momentum and apple-Earth mechanical energy are conserved. Its kinetic energy is conserved The apple’s momentum is conserved. The mechanical energy of the apple-Earth system is conserved.   
An apple drops from the tree and falls freely. The apple is originally at rest a...
An apple drops from the tree and falls freely. The apple is originally at rest a height H0 above the ground. The ground is covered with a thick lawn, which is made of blades of grass of height h. When the apple enters the grass, it slows down at a constant rate so that its speed is 0 when it reaches ground level. A. Find the speed of the apple just before it enters the grass. B. Find the acceleration...
A pendulum bob swings back and forth.  Ignore air resistance.  At point A, the potential energy is 15...
A pendulum bob swings back and forth.  Ignore air resistance.  At point A, the potential energy is 15 J and the pendulum bob is at a height of 1 meter. a) What is the mass of the pendulum bob? Show work by typing the equation and plugging in numbers. b) What is the total mechanical energy of the pendulum? Explain. c) At which point on the diagram will the maximum kinetic energy occur and what is the maximum kinetic energy of the...
A 0.0038 kg leaf falls 16.8 m to the ground, where it lands with a speed...
A 0.0038 kg leaf falls 16.8 m to the ground, where it lands with a speed of 12.2 m/s. What was the average force of air resistance on the leaf while it was falling?
An 80 kg skydiver falls through air with a density of 1.15 kg/m3 . Assume that...
An 80 kg skydiver falls through air with a density of 1.15 kg/m3 . Assume that his drag coefficient is C=0.57. When he falls in the spread-eagle position his body presents an area A1=0.94 m2 to the wind, whereas when he dives head first, with arms close to the body and legs together his area is reduced to A2=0.21 m2 . What are the terminal speeds in both cases?
A 52.0-kg sandbag falls off a rooftop that is 22.0 m above the ground. The collision...
A 52.0-kg sandbag falls off a rooftop that is 22.0 m above the ground. The collision between the sandbag and the ground lasts for a total of 17.0 ms. What is the magnitude of the average force exerted on the sandbag by the ground during the collision? I don't even know where to start... what formulas should I be using?
A) A body falls on the ground from a height of 10 m and rebounds to...
A) A body falls on the ground from a height of 10 m and rebounds to a height of 2.5 m. Calculate the percentage loss of kinetic energy of the body during its collision with the ground. B) A bomb explodes into two fragments of masses 3.0 kg and 1.0 kg. The total kinetic energy of the fragment is 6x10^4 joule. calculate the kinetic energy of the bigger fragment, and the momentum of the smaller fragment.
A runaway train speeds horizontally off a 500.0-m-high cliff. Ignore air resistance for all parts. (a)...
A runaway train speeds horizontally off a 500.0-m-high cliff. Ignore air resistance for all parts. (a) How long does the train spend in the air? (b) How fast did the train leave the cliff top to land on level ground below, 900.0 m from the base of the cliff? Give your answer in miles per hour. (c) What is the velocity (magnitude and direction) of the train 5 seconds after leaving the cliff? Give your answer with respect to the...
Answer the situations below USING PHYSICS EXPLANATIONS 1. If a tree falls in the woods and...
Answer the situations below USING PHYSICS EXPLANATIONS 1. If a tree falls in the woods and no one is there to hear it, does it make a sound? 2. If my Grandfather clock is running slow, how do I fix it? Explain. 3. Why do different people get different results if they touched a bare wire from an electrical outlet?
For projectile motion on level ground assuming negligible air resistance (the initial angle being neither 0o...
For projectile motion on level ground assuming negligible air resistance (the initial angle being neither 0o nor 90o): Can the speed ever be the same as the initial speed at a time other than at t = 0 ? a. No b. Yes, at the end of the arch (end of trajectory) c. Yes, at its maximum height d. Yes, at half of its maximum height
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT