Physics, 11e WileyPLUS + Loose-leaf
11th Edition
ISBN: 9781119394112
Author: John D. Cutnell, Kenneth W. Johnson, David Young, Shane Stadler
Publisher: Wiley (WileyPLUS Products)
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Chapter 6, Problem 4P
A
- the gravitational force and
- the escalator?
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Part C
Find the height yi
from which the rock was launched.
Express your answer in meters to three significant figures.
Learning Goal:
To practice Problem-Solving Strategy 4.1 for projectile motion problems.
A rock thrown with speed 12.0 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s2 for the free-fall acceleration.
PROBLEM-SOLVING STRATEGY 4.1 Projectile motion problems
MODEL: Is it reasonable to ignore air resistance? If so, use the projectile motion model.
VISUALIZE: Establish a coordinate system with the x-axis horizontal and the y-axis vertical. Define symbols and identify what the problem is trying to find. For a launch at angle θ, the initial velocity components are vix=v0cosθ and viy=v0sinθ.
SOLVE: The acceleration is known: ax=0 and ay=−g. Thus, the problem becomes one of…
Phys 25
Chapter 6 Solutions
Physics, 11e WileyPLUS + Loose-leaf
Ch. 6 - During a tug-of-war, team A pulls on team B by...Ch. 6 - You are moving into an apartment and take the...Ch. 6 - The brakes of a truck cause it to slow down by...Ch. 6 - A 75.0-kg man is riding an escalator in a shopping...Ch. 6 - Suppose in Figure 6.2 that +1.10103J of work is...Ch. 6 - A person pushes a 16.0-kg shopping cart at a...Ch. 6 - The drawing shows a plane diving toward the ground...Ch. 6 - A person pulls a toboggan for a distance of 35.0m...Ch. 6 - As a sailboat sails 47m due north, a breeze exerts...Ch. 6 - A 55-kg box is being pushed a distance of 7.0m...
Ch. 6 - A 1.00102kg crate is being pushed across a...Ch. 6 - A 1200-kg car is being driven up a 5.0 hill. The...Ch. 6 - A fighter jet is launched from an aircraft carrier...Ch. 6 - A golf club strikes a 0.045-kg golf ball in order...Ch. 6 - It takes 185kJ of work to accelerate a car from...Ch. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 18PCh. 6 - Prob. 19PCh. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Prob. 22PCh. 6 - Prob. 24PCh. 6 - Prob. 26PCh. 6 - Prob. 27PCh. 6 - A 75.0-kg skier rides a 2830-m-long lift to the...Ch. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - Prob. 36PCh. 6 - Prob. 37PCh. 6 - Prob. 38PCh. 6 - A slingshot fires a pebble from the top of a...Ch. 6 - The drawing shows two boxes resting on...Ch. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - The drawing shows a skateboarder moving at 5.4m/s...Ch. 6 - Prob. 44PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - The drawing shows two frictionless inclines that...Ch. 6 - A skier starts from rest at the top of a hill. The...Ch. 6 - Prob. 50PCh. 6 - Prob. 51PCh. 6 - Prob. 52PCh. 6 - Starting from rest, a 93-kg firefighter slides...Ch. 6 - Prob. 54PCh. 6 - Prob. 55PCh. 6 - Prob. 56PCh. 6 - In attempting to pass the puck to a teammate, a...Ch. 6 - Prob. 59PCh. 6 - Prob. 60PCh. 6 - Prob. 62PCh. 6 - Prob. 63PCh. 6 - You are working out on a rowing machine. Each time...Ch. 6 - A car accelerates uniformly from rest to 20.0m/s...Ch. 6 - Prob. 66PCh. 6 - Prob. 67PCh. 6 - Prob. 68PCh. 6 - Prob. 72PCh. 6 - Prob. 74PCh. 6 - Prob. 75PCh. 6 - Prob. 76APCh. 6 - A 2.00-kg rock is released from rest at a height...Ch. 6 - Prob. 80APCh. 6 - Prob. 81APCh. 6 - Some gliders are launched from the ground by means...Ch. 6 - Prob. 84APCh. 6 - A water slide is constructed so that swimmers,...Ch. 6 - Prob. 88APCh. 6 - Prob. 89CCPCh. 6 - Prob. 90CCPCh. 6 - Prob. 91TPCh. 6 - Prob. 92TP
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