10 A river is flowing at a speed of 1.5 m/s. Sam wants to row from point A on one bank to point B on the other bank directly opposite A. He intends to maintain a constant speed of 2.5 m/s. In what direction, correct to the nearest degree, should Sam row? Give your answer as an angle of inclination to the line AB.

10 A river is flowing at a speed of 1.5 m/s. Sam wants to row from point A on one bank to point B on the other bank directly opposite A. He intends to maintain a constant speed of 2.5 m/s. In what direction, correct to the nearest degree, should Sam row? Give your answer as an angle of inclination to the line AB.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 11.4OQ: Let the four compass directions north, east, south, and west be represented by unit vectors ne . ....

See similar textbooks

Similar questions

A small container of water is placed on a turntable inside a microwave oven, at a radius of 12.0cm from the center. The turntable rotates steadily, turning one revolution in each 7.25s. What angle does the water surface make with the horizontal?
1. An archer shots an arrow with an initial speed of 60.0 m/s at an angle of 30.0° with the archer's hand and the horizontal. If the archer is standing from the edge of 90.0 m tall building, then strikes a target on the ground. Note: The distance of the archer's hand with respect to the edge of the building is 5.0m. Neglect air resistance. Let the archer's hand be y=0. Find: a. The time taken by the arrow to hit the target at the ground level. b. The distance of the target from the base of the tall building. c. The maximum height reached by the arow with respect to the archer's hand. d. The horizontal and the vertical component of the arow's velocity just as it strike the target. e. The magnitude of the velocity and the direction of the arow just as it strike the target.
Let us name three perpendicular directions as right, up, and toward you as you might name them when you are facing a television screen that lies in a vertical plane. Unit vectors for these directions are r. u. and L respectively. Consider the quantity (-3 2t ). (i) Is the magnitude of this vector (a) 6, (b) 3, (c) 2, or (d) 0? (ii) Is the direction of this vector (a) down, (b) toward you, (c) up, (d) away from you, or (e) left?
A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 20.0 m/s at an angle of 53.0 to the horizontal, (a) By how much does the ball clear or fall short of clearing the crossbar? (b) Does the ball approach the crossbar while still rising or while falling?
A pet mouse sleeps near the eastern edge of a stationary, horizontal turntable that is supported by a friction-less, vertical axle through its center. The mouse wakes up and starts to walk north on the turntable, (i) As it takes its first steps, what is the direction of the mouse's displacement relative to the stationary ground below? (a) north (b) south (c) no displacement, (ii) In this process, the spot on the turntable where the mouse had been snoozing undergoes a displacement in what direction relative to the ground below? (a) north (b) south (c) no displacement. Answer yes or no for the following questions, (iii) In this process, is the mechanical energy of I lie mouse-i mutable system constant? (iv) Is the momentum of the system constant? (v) Is the angular momentum of the system constant?
A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves with constant speed over most of its path. In this part of its motion, (a) does the doorknob experience a centripetal acceleration? (b) Does it experience a tangential acceleration?
Two vectors A and B have precisely equal magnitudes. For the magnitude of A+B to be larger than the magnitude of AB by the factor n, what must be the angle between them?
In some motorcycle races, the riders drive over small hills and the motorcycle becomes airborne for a short time interval If the motorcycle racer keeps the throttle open while leaving the hill and going into the air, the motorcycle tends to nose upward. Why?
A soccer player kicks a ball, while imparting spin to bend it. The ball starts on the ground and is kicked with an initial velocity of 15 ?/?, at an angle of elevation 30 degrees. Assume the ball was kicked north and the spin creates a constant acceleration ? to the west, which is what makes the ball follow a curved path. If the ball lands 8 meters west of the starting point, what is the value of ?? Assume the standard value of ? = 9.8 ?/?2.
A ship sets sail from Rotterdam, The Netherlands, heading due north at 8.5 m/s relative to the water. The local ocean current is 1.50 m/s in a direction 40.0° north of east. What is the magnitude of the velocity of the ship relative to the Earth in m/s? What is the angle of the velocity of the ship relative to the Earth in degrees N of E?
4 pt) Two vectors appear as in the figure. Which combination points directly downward? Circle the correct answer and support your choice with the drawing below. A. ? + ? B. ? ― ? C. ? ― ? D. ― ? ― ?
9) Consider vector A = (7, 5) and vector B = (−3, −4). a) What is the direction and magnitude of vector A? b) What is the direction and magnitude of vector B? c) What is the direction and magnitude of vector C = A + B?