RelVel-River3 A river flows due south with a speed of 1.1 m/s Aman steers a motorboat across the river, his velocity relative to the water is 4.6 m/s due east. The river is 880 m wide. =13 between his velocity and the direction to the east Previous Answers Submit V Correct Part C How much time is required to cross the river? Express your answer using two significant figures. t190 s Previous Answers Submit V Correct Part D How far south of his starting point will he reach the opposite bank? Express your answer using two significant figures V ΑΣφ L= Request Answer Submit Provide Feedback

RelVel-River3 A river flows due south with a speed of 1.1 m/s Aman steers a motorboat across the river, his velocity relative to the water is 4.6 m/s due east. The river is 880 m wide. =13 between his velocity and the direction to the east Previous Answers Submit V Correct Part C How much time is required to cross the river? Express your answer using two significant figures. t190 s Previous Answers Submit V Correct Part D How far south of his starting point will he reach the opposite bank? Express your answer using two significant figures V ΑΣφ L= Request Answer Submit Provide Feedback

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

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 2.55P: A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under...

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A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 18.0 m/s. The cliff is 50.0 m above a flat, horizontal beach as shown in Figure P3.7. (a) What are the coordinates of the initial position of the stone? (b) What are the components of the initial velocity? (c) Write the equations for the x- and y-components of the velocity of the stone with time, (d) Write the equations for the position of the stone with time, using the coordinates in Figure P3.7. (e) How long after being released does the stone strike the beach below the cliff? (f) With what speed and angle of impact does the stone land? Figure P3.7
A rugby player passes the ball 7.00 m across the field, where it is caught at the same height as it left his hand. (a) At what angle was the ball thrown if its initial speed was 12.0 m/s, assuming that the smaller of the possible angles was used? (b) What other angle gives the same range, and why would it not be used? (c) How long did this pass take?
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the distance from the limb to the level of the saddle is 3.00 m. (a) What must be the horizontal distance between the saddle and limb when the ranch hand makes his move? (b) For what time interval is he in the air?
A rocket is launched at an angle of 58.0° above the horizontal with an initial speed of 104 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 30.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. What is the total time of flight? What is the horizontal range?
A soccer ball is rolling along the ground with a velocity of (27 m/s) yˆ. While staying on the ground, the ballthen experiences a constant acceleration of (-8.1 m/s2) xˆ. Assume the ball is at the origin when thisacceleration is frst applied.(a) What are the ball’s x- and y-coordinates of its position 6.0 s later?(b) What are the x- and y-components of the ball’s velocity at this time?
Sarah is traveling 22km due South. She turns 20° S or E for 16km. She then turns due N for 40km, she then moves 14km at 40° S or W. What is her displacement, and direction?
I'm not sure how to solve this! I tried and got 1.3 / 2.4 seconds. Am i right? Could you explain how to do it if i'm not? Cheers ! In a classic Seinfeld episode, Jerry tosses a loaf of bread (a marble rye) straight upward to his friend George who is leaning out of a third-story window. If the loaf of bread leaves Jerry's hand at a height of 1 m with an initial velocity of 18 m/sec, write an equation for the vertical position of the bread s (in meters) t seconds after release. How long will it take the bread to reach George if he catches the bread on the way up at a height of 16 m? Round to the nearest tenth of a second.
A scooter begins at rest at t0=0 seconds. The scooters starts moving, and eventually covers a distance d= 651m, in a time tf= 104 seconds. In a coordinate system with north being the positive x-direction, the scooter's motion is in the northern direction. What wa the scooter's average speed, during this time period, in meters per second? What was the scooters displacement in the northern direction during this person, in meters? What was the scooter's average velocity in the northern direction, in this period in meters per second? If the scooter's final velocity at tf was 12 m/s, what was the scooter's average acceleration in the northern direction, during this period in m/s%^2?
Need full detailed answers for the following questions. Answers are given but need the steps/proccess. A cyclist rides 3 km west and then turns around and rides 2 km east. (a) What is her displacement? (b) What distance does she ride? (c) What is the magnitude of her displacement? Solutions: (a) The rider’s displacement is Δx = xf − xo=-1 km. (The displacement is negative because we take east to be positive and west to be negative.) (b) The distance traveled is 3 km + 2 km = 5 km. (c) The magnitude of the displacement is 1 km.
A North American river otter wants to cross the North Saskatchewan river. It can swimat a speed of 2.75 m/s. In that location, the distance directly across the river is 45.0 mand the current velocity is 2.5 m/s. a) How much time does the otter take to get to the other side, if it points directlyacross the river? b) How many metres downstream will the current have carried the otter when itgets to the other side? c) Calculate the otter’s velocity, relative to the bank from where it started.
A bird embarks on the journey of winter migration from her nest. She starts by ﬂying 65.0 km due south. She then heads 55.0 ̊ south of east for 45.0 km. She ﬂies the last portion of her journey heading 35.0 ̊ south of west for 83.0 km. a) How far from the nest does the bird end up at the end of her journey? Give your answer to 3 signiﬁcant ﬁgures. b) In what direction is the nest, relative to the bird’s ﬁnal position? Give your answer as an angle, to the nearest degree.
You take a three-day hiking. On the first day, you travel 5.0 km heading East. On the second day you’ve enjoyed the scenery so much that you forgot to take note how far you have walked and in what direction. On the third day, after wandering for 8.5 km and in the direction 37o South of West, you find yourself in the base camp where you have started (which means the total displacement is zero). Determine your displacement during the second day of your trip.