Concept explainers
CP An oil tanker’s engines have broken down, and the wind is blowing the tanker straight toward a reef at a constant speed of 1.5 m/s (Fig. P4.34). When the tanker is 500 m from the reef, the wind dies down just as the engineer gets the engines going again. The rudder is stuck, so the only choice is to try to accelerate straight backward away from the reef. The mass of the tanker and cargo is 3.6 × 107 kg, and the engines produce a net horizontal force of 8.0 × 104 N on the tanker. Will the ship hit the reef? If it does, will the oil be safe? The hull can withstand an impact at a speed of 0.2 m/s or less. Ignore the retarding force of the water on the tanker’s hull.
Want to see the full answer?
Check out a sample textbook solutionChapter 4 Solutions
UNIVERSITY PHYSICS V.2 W/ACCESS >IC<
Additional Science Textbook Solutions
Tutorials in Introductory Physics
The Cosmic Perspective
College Physics: A Strategic Approach (3rd Edition)
Physics (5th Edition)
The Cosmic Perspective Fundamentals (2nd Edition)
- A 276-kg glider is being pulled by a 1 950-kg jet along a horizontal runway with an acceleration of a = 2.20 m/s2 to the right as in Figure P4.41. Find (a) the thrust provided by the jets engines and (b) the magnitude of the tension in the cable connecting the jet and glider. Figure P4.41arrow_forwardReview. A block of mass m = 2.00 kg is released from rest at h = 0.500 m above the surface of a table, at the top of a = 30.0 incline as shown in Figure P4.53. The frictionless incline is fixed on a table of height H = 2.00 m. (a) Determine the acceleration of the block as it slides down the incline. (b) What is the velocity of the block as it leaves the incline? (c) How far from the table will the block hit the floor? (d) What time interval elapses between when the block is released and when it hits the floor? (e) Does the mass of the block affect any of the above calculations? Figure P4.53 Problems 53 and 59arrow_forwardTwo blocks of mass 3.50 kg and 8.00 kg are connected by a massless string that passes over a frictionless pulley (Fig. P4.47). The inclines are frictionless. Find (a) the magnitude of the acceleration of each block and (b) the tension in the string. Figure P4.47arrow_forward
- A cart of mass 8.0kg was moved by applying two constant forces. Force 1 is 28.0N at 42.0 degrees, and Force 2 is 13.0N at 110 degrees. Initially, the cart has a velocity of (3.50i + 2.20j)m/s. a. Express the two forces in unit-vector notation.b. Find the total force exerted on the cart.c. Find the angle at which the total force is applied.d. What is the acceleration of the cart?e. What is the cart's velocity after 5.0s?f. What is the position of the cart after 5.0s?g. What is the angle of the position after 5.0s?h. What is the total work done by the two applied forces?arrow_forwardA spacecraft flying horizontally over the surface of the moon at an elevation of 1500m with a speed of 350m/s, drops a package with a mass of 1200kg to astronauts on the surface. Use gm= 1.6m/s2 for the acceleration due to gravity on the Moon. a)How long does it take the package to hit the surface after it is dropped? b)How far ahead (distance) of the package’s landing spot should the package be released? c)What is the velocity of the package just before it hits the surface? d)What is the magnitude of the velocity of the package just before it hits the surface of the Moon?arrow_forwardWhich of the following system CAN be used as an inertial reference frame? a. A block rotating about its center of mass b. A box sliding down with a constant velocity c. A car turning in a curved intersection d. A chair on a ferris wheel rotating at a constant rate.arrow_forward
- A city is trying to determine the speed limit for a given stretch of road. If a stop sign is visible from 62.0m on a straight, horizontal stretch of road and the coefficient of static friction between the road and the tires of a car is 0.525 then what is the maximum speed for a car in meters per second so that it can come to a complete stop at the stop sign?arrow_forwardThree F forces 1 = (2.00î + 2.00ĵ) N, F2 = (−5.00î− 3.00ĵ) N and F3 = (4.50î) N act on a body, initially at rest, producing an acceleration equal to 3 , 60m s 2 ⁄. (a) What is the direction of the acceleration vector in relation to the x-axis> 0? (b) What is the body mass? (c) What is the speed of the body after 10.0s? (d) What are the components of the velocity vector after 10.0s? Answers: (a) θ ≅ 326.3 °; (b) m = 0.500kg; (c) v = 36,0m⁄s and (d) vx = 30,0m⁄s and vy = −20,0m⁄s.arrow_forwardThe velocities of m1 and m2 are V1 and V2 and it is V1>0 and V2<0 . The accelerations of the masses are a1, a2, a3. Ropes and pulleys are massless and frictionless. Solve the problem using the coordinate system given in the figure. For m1=m2=m3, plot a1 versus µ Hint : m1*a1=T-m1*µ(k) m2*a2= -T+ m2*g*µ(k) m3*a3= 2*T-m3*g 2*x3=x1-x2 => 2*a3=a1-a2arrow_forward
- Ignoring drag, what is the x-component of the acceleration of a projectile? Why?arrow_forwardWhich of the following reference frames is NOT an inertial reference frame? * A. A man on a car speeding up on a freeway B. A woman on the street not moving C. A man on a train that is moving at constant velocity D. A woman in a car that is not acceleratingarrow_forwardA swan is landing on an icy lake, sliding across the ice and gradually coming to a stop. As the swan slides, the direction of the acceleration isA. To the left.B. To the right.C. Upward.D. Downward.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning