KE₁ O yes A 70.0000-kg skier with an initial speed of 10.0000 m/s coasts up a 2.5000-m-high rise as shown in the figure. The coefficient of friction between her skis and the snow is 0.0800. Hint: find the distance traveled up the incline assuming a straight-line path as shown in the figure. Think & Prepare 1. Make note of what's given and what's unknown. Relate known quantities to symbols. 2. Draw a labeled sketch if possible. 4. Insert numerical quantities to solve for unknowns. 5. Does the answer make sense? (a) Is mechanical energy conserved in this problem? V₁ 3. Identify the physics principle and approach. Write down relevant equations symbolically. Simplify if possible. O zero O no (b) The change in mechanical energy equals O work done by friction. 35° O increase in PE. (c) The work done by friction is 2.5 m

KE₁ O yes A 70.0000-kg skier with an initial speed of 10.0000 m/s coasts up a 2.5000-m-high rise as shown in the figure. The coefficient of friction between her skis and the snow is 0.0800. Hint: find the distance traveled up the incline assuming a straight-line path as shown in the figure. Think & Prepare 1. Make note of what's given and what's unknown. Relate known quantities to symbols. 2. Draw a labeled sketch if possible. 4. Insert numerical quantities to solve for unknowns. 5. Does the answer make sense? (a) Is mechanical energy conserved in this problem? V₁ 3. Identify the physics principle and approach. Write down relevant equations symbolically. Simplify if possible. O zero O no (b) The change in mechanical energy equals O work done by friction. 35° O increase in PE. (c) The work done by friction is 2.5 m

Name: O yesO no(b) The change in mechanical energy equalsO zeroSearchO work
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Description: O yesO no(b) The change in mechanical energy equalsO zeroSearchO work done by friction.O increase in PE.(c) The work done by friction isO positive.negative.(d) Find her final speed at the top.m/sSubmit Answersee other options - If you don't want to

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter2: The Kinetic Theory Of Gases

Section: Chapter Questions

Problem 35P: A person hits a tennis ball with a mass of 0.058 kg against a wall. The average component of the...

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A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0 above the horizontal and at a height of 10.0 m above the level ground. Neglect air resistance, (a) What is her speed when she leaves the track? (b) What is the maximum altitude she attains after leaving the track? (c) Where does she land relative to the end of the track?
A person hits a tennis ball with a mass of 0.058 kg against a wall. The average component of the ball's velocity perpendicular to the wall is 11 m/s, and the ball hits the wall every 2.1 s on average, rebounding with the opposite perpendicular velocity component. (a) What is the average force exerted on the wall? (b) If the part of the wall the person hits has an area of 3.0 m2, what is the average pressure on that area?
The front 1.20 m of a 1 400-kg car is designed as a crumple zone that collapses to absorb the shock of a collision. If a car traveling 25.0 m/s stops uniformly in 1.20 m, (a) how long does the collision last, (b) what is the magnitude of the average force on the car, and (c) what is the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.
Check Your Understanding Suppose that Balto in Example 2.10 leaves the game to attend to more important matter, but Astro Clifford and Dug continue playing. Astro and Clifford’s pull on the toy does not change, but Dug rims around and bites on the toy in a different place. With how big a force and in what direction must Dug pull on the toy now to balance out the combined pulls from Clifford and Astro? Illustrate this situation by drawing a vector diagram indicating all forces involved.
4. A 70 Kg athlete leaps straight up into the air from a trampoline with an initial speed of 7.0 m/s. Take y = 0 to be the position the athlete leaves the trampoline and ignore air resistance. how shoqes di nwob edhW (1 912 a. What is the maximum height the athlete reaches? Step 1) Draw a picture and list the value of all variables at the athlete's starting position and ending position. .£q912 ni nolicups or otni gulą of been woy z9ulev ri telual 10 11J (S 9912 Step 2) Is energy conserved? Yes = write the conservation of energy equation. No write the equation for non- conserved work. 102 (E 9912 nobil yd snob how s Step 3) Plug in values to the equation from step 2 and solve for maximum height. srij 11 m 0.00 to trigisil s of brucny ont moit siqaq to llut 101 Serler abin Toravste srit gnol wor 1010 smit tot svioz uoy tel lliw tens potten b. Solve this problem with kinematic equations and confirm the answers are the same. 0.000,21 A (8 21 (1 q912 Aitnsbl (S q912 smils sris tol svio2 (8…
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