Question

A 4.0 kg mass starting at rest is dropped from a height of 120 m above...

A 4.0 kg mass starting at rest is dropped from a height of 120 m above the surface of the Earth. As it falls it experiences an air resistance of 13 N. Just before it strikes the ground, determine the change in potential energy ΔU, the work done by the air W, the final kinetic energy Kf, and its final speed vf

Homework Answers

Answer #1

Cheers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 4.0 kg mass starting at rest is dropped from a height of 120 m above...
A 4.0 kg mass starting at rest is dropped from a height of 120 m above the surface of the Earth.  As it falls it experiences an air resistance of 13 N.  Just before it strikes the ground, determine the change in potential energy ΔU, the work done by the air W, the final kinetic energy Kf, and its final speed vf.
A stone 0.44 kg mass is released from rest from a height of 29.4 m above...
A stone 0.44 kg mass is released from rest from a height of 29.4 m above the ground. Ignoring air resistance and letting the ground be the zero potential energy level, Determine the final kinetic energy of the stone using energy conservation principle only, not as a free fall. Determine the work done on the stone by gravity.
A hot air balloon drops a 20 kg package from rest at a height of 120...
A hot air balloon drops a 20 kg package from rest at a height of 120 m from the ground. Assume we can ignore friction losses, as the package falls through the air. a) How much initial potential energy is stored by the package? b) What is the kinetic energy of the package just before it hits the ground? c) What is the speed of the energy before it hits the ground?
1 a) Starting from rest, a 50 Kg person dives into water from a height of...
1 a) Starting from rest, a 50 Kg person dives into water from a height of 80 m above the water surface. Air resistance is negligible. (Use g= 10 m/s2) Calculate (A) the diver’s KE just before striking the water surface (B) the velocity of the diver just before striking the water (C) the work done by gravitational force on the diver (D) the power delivered by gravitational force on the diver b) A ball of mass m=0.2 Kg sitting...
An object of mass 120 kg is released from rest 480000 m above the ground and...
An object of mass 120 kg is released from rest 480000 m above the ground and allowed to fall under the influence of gravity. Assume the gravitational force is constant, with g=9.8 m/sec2 , and the force due to air resistance is proportional to the velocity of the object with proportionality constant k= 3 kg/sec. Approximate the speed (in m/sec) of the object when it strikes the ground.
A ball of mass 0.4 kg is lifted up to a height of 10 m. what...
A ball of mass 0.4 kg is lifted up to a height of 10 m. what is the ball's potential energy at this point? if the ball is dropped from the rest at this height, what is the ball's speed just before it hits the ground. if the force of air resistance is 0.1 N, what is the ball's speed just before it hits the ground?
a mass if 48.0 kg is dropped from a height of 29.0 m. what is the...
a mass if 48.0 kg is dropped from a height of 29.0 m. what is the kinetic and potential energy when it is a) dropped b) half way to the ground c) about to strike the ground
A rock is dropped, from rest, from a height of 8.9 m above the ground at...
A rock is dropped, from rest, from a height of 8.9 m above the ground at t = 0 s. At the same time that the rock is dropped a stone is thrown upward from a height of 1.1 m above the ground at a speed of 7.1 m/s. The stone travels straight upward toward the rock. There is no air resistance. a. Determine the height above the ground where the rock hits with the stone. Blank 1. Calculate the...
An 80 kg object is dropped from rest from a height of 25 meters above the...
An 80 kg object is dropped from rest from a height of 25 meters above the ground. Use the concept of energy conservation to find its speed when it is 10 meters above the ground. (Please explain, very confuse)
A ball of mass 5.93 kg is released from rest at height 7.62 m above the...
A ball of mass 5.93 kg is released from rest at height 7.62 m above the floor. It falls, hits the ground, and rebounds to height 3.2 m above the floor. Assume none of the losses are due to air friction. Find the work done against friction, in J, on the ball during the contact with the ground
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT