A 25 kg bear slides, from rest, 12 m down a lodge pole pine tree, moving with
Question:
A 25 kg bear slides, from rest, 12 m down a lodge pole pine tree, moving with a speed of 5.6 m/s just before hitting the ground.
(a) What change occurs in the gravitational potential energy of the bear-Earth system during the slide?
(b) What is the kinetic energy of the bear just before hitting the ground?
(c) What is the average frictional force that acts on the sliding bear?
Step by Step Answer:
a We take the initial gravitational pote...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Related Video
In Physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. In this video, the concept of force and torque is demonstrated with the practical application of changing the flat tire of the car.
Students also viewed these Mechanics questions
-
A 0.060-kg tennis ball, moving with a speed of 2.50m/s, collides head-on with a 0.090-kg ball initially moving away from it at a speed of 1.15m/s. Assuming a perfectly elastic collision, what are the...
-
A proton moving with a speed of 2 106 m/s through a magnetic field with magnetic flux density of 2.5 T experiences a magnetic force of magnitude 4 10-13 N. What is the angle between the magnetic...
-
What is the net force that acts on a 10-N freely falling object?
-
The ultimate test of fluency in MS and IR is whether you can determine a moderately complex structure from just the MS and the IR, with no additional information. The IR and MS of a compound are...
-
a. Determine the spread that would be earned each year if Stetson uses an interest rate swap to hedge all of its interest rate risk. Would you recommend that Stetson use an interest rate swap? b....
-
Write a program that takes as input a fully parenthesized, arithmetic expression and converts it to a binary expression tree. Your program should display the tree in some way and also print the value...
-
If, unlike a perfectly competitive employer, a monopsonist has to pay a higher wage to attract more workers, whywill a monopsonist pay a lower wage than a perfectly competitive employer?
-
Selected financial information of Gray Plains Inc. for the current year follows. During the year, Gray Plains Inc. took advantage of the current interest rates and called $125 million of long-term...
-
Evaluate the challenges that MacDonald's has, and why promoting in-house talent is vital for Macdonald's vision?
-
There is a lottery with n coupons and n people take part in it. Each person picks exactly one coupon. Coupons are numbered consecutively from 1 to n, n being the maximum ticket number. The winner of...
-
A 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 m/s directed 25o above the horizontal. Suppose that as a result of air drag the skier returns to the ground with a speed of.22...
-
An outfielder throws a baseball with an initial speed of 81.8 mi/h. Just before an infielder catches the ball at the same level, the ball's speed is 110 ft/s. In foot-pounds, by how much is the...
-
An abc-phase-sequence three-phase balanced wye-connected source supplies a balanced delta-connected load. The impedance per phase of the delta load is . If the line impedance is zero and the line...
-
From an initial examination, price discrimination may not seem like a social good because ________ is transferred from consumer to producer, but the overall benefit for society ________. deadweight...
-
The electric field strength 1 . 5 cm from an electric dipole, on the axis of the dipole, is 1 . 5 times 1 0 5 N / C . What is the dipole moment in nC ? What is the magnitude of each of the dipole's...
-
Malachi has fallen into a bit of a power struggle with Foxy, his 4 0 . 5 - kg Golden Retriever. He is applying a horizontal force to accelerate Foxy across the lawn. What force ( in Newtons ) must be...
-
The fed funds market is a market: a. that is not affected by the Feds open market operations. b. in which a bank may borrow excess reserves overnight from another bank in order to cover a...
-
9) A firm has a production function y = 3x1 + x2. If the factor prices are $12 for factor 1 and $3 for factor 2, what is the minimum cost of producing 30 units of output? $1,170 $1,080 $360 $180 $90...
-
A hospital pharmacist regularly resold his excess inventory to a drug wholesaler. Although the PDMA was not an issue in this case, perhaps it should have been. The PDMA was passed in 1987 in part to...
-
10m solution. If Ka(HA) = 10 then pOH of solution will be [Given : log4=0.6] (A) 6.7 (B) Greater than 6.7 & less than 7.0 (C) Greater 7.0 & less than 7.3 (D) Greater than 7.3
-
Listed companies are required to make certain disclosures in their annual reports about the compensation paid to their top executives. One reason for this is to help interested stakeholders assess...
-
The pressure gauge on a tank registers the gauge pressure, which is the difference between the interior and exterior pressure. When the tank is full of oxygen (O2), it contains 12.0 kg of the gas at...
-
Estimate the mass of the air in your bedroom. State the quantities you take as data and the value you measure or estimate for each.
-
On his honeymoon James Joule traveled from England to Switzerland. He attempted to verify his idea of the interconvertibility of mechanical energy and internal energy by measuring the increase in...
-
Describe the process of depth-first search (DFS) and provide a Python implementation to traverse a graph using DFS.
-
A number like 197 is called a **Fare prime** because when all of its digits are rotated (197, 971 and 719), each new number is also prime. Help me a code that can find all fare primes up to a...
-
Required: 1. Determine the inventory on March 31 and the cost of merchandise sold for the three-month period, using the first-in, first-out method and the periodic inventory system. Merchandise...
Study smarter with the SolutionInn App