Explanation Given data: Initial velocity of skier is, v i = 12.0 m s . Angle between sloped section and the horizontal is, θ = 45 ∘ . Formula used: The formula for final displacement of the skier in x- direction is, x f = x i + ( v x ) i Δ t (1) x i is the initial displacement in x -direction, ( v x ) i is the x -component (horizontal) of initial speed of the skier, Δ t is the time duration of skier in the air. The formula for the final displacement of the skier in y - direction is, y f = y i + ( v y ) i Δ t − 1 2 g ( Δ t ) 2 (2) Here, y i is the initial displacement in y -direction, ( v y ) i is the y -component (vertical) of initial speed of the skier, g is the acceleration due to gravity, The expression for the vertical component of initial velocity ( y - direction ) is, ( v y ) i = v i sin θ (3) Here, v i is the initial velocity, θ is the angle of a downward sloped section with horizontal. The expression for the horizontal component of initial velocity ( x - direction ) is, ( v x ) i = v i cos θ (4) Explanation: The diagrammatic representation of given information is shown in figure 1, Substitute 45 ∘ for θ , and 12.0 m s for v i in equation (3) to find the vertical component of initial velocity, ( v y ) i = ( 12.0 m s ) sin 45 ∘ ( v y ) i = 8.485 m s Substitute 45 ∘ for θ , and 12.0 m s for v i in equation (4) to find the horizontal component of initial velocity, ( v x ) i = ( 12.0 m s ) cos ( 45 ∘ ) ( v x ) i = 8.485 m s From Figure 1, the initial displacement of skier in x – direction is, x i = 0 m . Therefore, substitute 0 m for x i , and 8.485 m s for ( v x ) i in equation (1) to find the expression for x f , x f = ( 0 m ) + ( 8

MODIFIED MASTERING COLLEGE PHYSICS 18WK.

4th Edition

ISBN: 9780136782216

Author: Knight

Publisher: PEARSON

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Chapter 3, Problem 60GP

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The time duration of skier in the air.

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Chapter 3, Problem 59GP

Chapter 3, Problem 61GP

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MODIFIED MASTERING COLLEGE PHYSICS 18WK.

Ch. 3 - a. Can a vector have nonzero magnitude if a...Ch. 3 - Prob. 2CQ Ch. 3 - Suppose two vectors have unequal magnitudes. Can...Ch. 3 - Prob. 4CQ Ch. 3 - For a projectile, which of the following...Ch. 3 - A baseball player throws a ball at a 40 angle to...Ch. 3 - An athlete performing the long jump tries to...Ch. 3 - If you kick a football, at what angle to the...Ch. 3 - Prob. 9CQ Ch. 3 - Prob. 10CQ

Ch. 3 - If you go to a ski area, youll likely find that...Ch. 3 - In an amusement-park ride, cars rolling along at...Ch. 3 - There are competitions in which pilots fly small...Ch. 3 - Prob. 14CQ Ch. 3 - You are cycling around a circular track at a...Ch. 3 - An airplane has been directed to fly in a...Ch. 3 - When you go around a corner in your car, your car...Ch. 3 - A person trying to throw a ball as far as possible...Ch. 3 - Prob. 19CQ Ch. 3 - Prob. 20MCQ Ch. 3 - Prob. 21MCQ Ch. 3 - The gas pedal in a car is sometimes referred to as...Ch. 3 - A car travels at constant speed along the curved...Ch. 3 - Prob. 24MCQ Ch. 3 - Prob. 25MCQ Ch. 3 - Prob. 26MCQ Ch. 3 - Prob. 27MCQ Ch. 3 - A football is kicked at an angle of 30 with a...Ch. 3 - A football is kicked at an angle of 30 with a...Ch. 3 - Prob. 30MCQ Ch. 3 - Formula One race cars are capable of remarkable...Ch. 3 - Prob. 1P Ch. 3 - Prob. 2P Ch. 3 - Prob. 3P Ch. 3 - Prob. 4P Ch. 3 - A position vector with magnitude 10 m points to...Ch. 3 - A velocity vector 40 above the positive x-axis has...Ch. 3 - A cannon tilted upward at 30 fires a cannonball...Ch. 3 - Prob. 8P Ch. 3 - Draw each of the following vectors, then find its...Ch. 3 - Draw each of the following vectors, then find its...Ch. 3 - Each of the following vectors is given in terms of...Ch. 3 - Each of the following vectors is given in terms of...Ch. 3 - A wildlife researcher is tracking a flock of...Ch. 3 - Jack and Jill ran up the hill at 3.0 m/s. The...Ch. 3 - Josh is climbing up a steep 34 slope, moving at a...Ch. 3 - You begin sliding down a 15 ski slope. Ignoring...Ch. 3 - A car traveling at 30 m/s runs out of gas while...Ch. 3 - In the Soapbox Derby, young participants build...Ch. 3 - A piano has been pushed to the top of the ramp at...Ch. 3 - Prob. 20P Ch. 3 - A car goes around a corner in a circular arc at...Ch. 3 - Prob. 22P Ch. 3 - Prob. 23P Ch. 3 - Prob. 24P Ch. 3 - Prob. 25P Ch. 3 - Prob. 26P Ch. 3 - A ball is thrown horizontally from a 20-m-high...Ch. 3 - A ball with a horizontal speed of 1.25 m/s rolls...Ch. 3 - A pipe discharges storm water into a creek. Water...Ch. 3 - A pipe discharges storm water into a creek. Water...Ch. 3 - Prob. 31P Ch. 3 - A rifle is aimed horizontally at a target 50 m...Ch. 3 - A gray kangaroo can bound across a flat stretch of...Ch. 3 - On the Apollo 14 mission to the moon, astronaut...Ch. 3 - Prob. 35P Ch. 3 - Prob. 36P Ch. 3 - Racing greyhounds are capable of rounding corners...Ch. 3 - To withstand g-forces of up to 10 gs, caused by...Ch. 3 - Prob. 39P Ch. 3 - In a roundabout (or traffic circle), cars go...Ch. 3 - A particle rotates in a circle with centripetal...Ch. 3 - Entrance and exit ramps for freeways are often...Ch. 3 - A peregrine falcon in a tight, circular turn can...Ch. 3 - An airplane cruises at 880 km/h relative to the...Ch. 3 - Anita is running to the right at 5 m/s, as shown...Ch. 3 - Anita is running to the right at 5 m/s, as shown...Ch. 3 - Two children who are bored while waiting for their...Ch. 3 - A boat takes 3.0 h to travel 30 km down a river,...Ch. 3 - A particle rotates in a circle with centripetal...Ch. 3 - Suppose D=AB where vector A has components Ax = 5,...Ch. 3 - Suppose E = 2A+3B where vector A has components Ax...Ch. 3 - For the three vectors shown in Figure P3.47, the...Ch. 3 - Prob. 54GP Ch. 3 - Prob. 55GP Ch. 3 - A pilot in a small plane encounters shifting...Ch. 3 - Prob. 57GP Ch. 3 - Prob. 58GP Ch. 3 - A skier gliding across the snow at 3.0 m/s...Ch. 3 - Prob. 60GP Ch. 3 - A physics student on Planet Exidor throws a ball,...Ch. 3 - Prob. 62GP Ch. 3 - In 1780, in what is now referred to as Bradys...Ch. 3 - The longest recorded pass in an NFL game traveled...Ch. 3 - A spring-loaded gun, fired vertically, shoots a...Ch. 3 - Small-plane pilots regularly compete in message...Ch. 3 - Prob. 67GP Ch. 3 - Trained dolphins are capable of a vertical leap of...Ch. 3 - A tennis player hits a ball 2.0 m above the...Ch. 3 - The shot put is a track-and-field event in which...Ch. 3 - Water at the top of Horseshoe Falls (part of...Ch. 3 - A supply plane needs to drop a package of food to...Ch. 3 - Prob. 73GP Ch. 3 - Ships A and B leave port together. For the next...Ch. 3 - A flock of ducks is trying to migrate south for...Ch. 3 - A kayaker needs to paddle north across a...Ch. 3 - A plane has an airspeed of 200 mph. The pilot...Ch. 3 - The Gulf Stream off the east coast of the United...Ch. 3 - A ball thrown horizontally at 25 m/s travels a...Ch. 3 - A sports car is advertised as capable of reaching...Ch. 3 - A Ford Mustang can accelerate from 0 to 60 mph in...Ch. 3 - The Screaming Swing is a carnival ride that isnot...Ch. 3 - On an otherwise straight stretch of road near...Ch. 3 - Prob. 84MSPP Ch. 3 - Prob. 85MSPP Ch. 3 - Prob. 86MSPP Ch. 3 - Prob. 87MSPP Ch. 3 - Prob. 88MSPP

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