A jogger runs directly east for 3 km, then turns andgoesnorthwest for 5 km. He then travels directly south for 5km.

1.)How far is he from the starting point?(km)

2.)In whatdirection is he from the starting point(measuredas an anglecounterwise from the east axis, units are deg)?(Northwest is thedirection lying exactly half way between northandwest.)

answer

watching

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Patrina SchowalterLv2

10 Nov 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page - find all choices before answering. Two vectors A and B lie in the xy plane and are given by A = Ax i + Ay j B = Bx i + By j, where Ax = 3.58 m, Ay = 2.85 m, Bx = 7.09 m, By = -6.36 m. Find the magnitude of R = A + B. Answer in units of m Find the angle theta (between -180 degree and + 180 degree with counterclockwise positive) that the vector R makes from the positive x axis. Answer in units of degree When the Sun is directly overhead, a hawk dives toward the ground at a speed of 7.23 m/s. If the direction of his motion is at an angle of 39.8 below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s Vector A has a magnitude of 10 and points in the positive x-direction, Vector B has a magnitude of 17 and makes an angle of 32 degree with the positive x-axis. What is the magnitude of A - B? An airplane starting from airport A (lies 342 km east, then 531 km at 62.2 degree west of north, and then 778 km north to arrive finally at airport B. The next day, another plane flies directly from A to B in a straight line. In what direction should the pilot trawl in this direct flight? Use counterclockwise its the positive angular direction from due east, between the limits of - 180 degree ami 180 degree . Assume there is no wind during these flights. Answer in units of degree How far will the pilot travel in this direct flight? Answer in units of km A projectile is fired straight upward at 126 m/s. How fast is it moving at the instant it reaches the top of its trajectory? Answer in units of m/s How fast is it moving at the instant it reaches the top of its trajectory if the projectile is fired upward at 12 degree from the horizontal? Answer in units of m/s At one instant the velocity of a particle is and a very short time later its velocity has changed to . Qualitatively, what was the direction of the particle's acceleration during the interval between the first and second instance?

Use the result (9.73) of Problem 9.26 io do the following: A naval gun shoots a shell at colatitude theta in a direction that is a above the horizontal and due east, with muzzle speed v0. Ignoring the earth's rotation (and air resistance), find how long (l) the shell would be in the air and how far away (R) it would land. If v0 = 500 m/s and alpha = 20degree, what are t and R? A naval gunner sports an enemy ship due east at the range R of part (a) and, forgetting about the Coriolis effect, aims his gun exactly as in part (a). Find by how far north or south, and in which direction, the shell will miss the target, in terms of ohm, v0, alpha, theta, and g. (It will also miss in the east-west direction but this is perhaps less critical.) If the incident occurs at latitude 50degree north (theta = 40degree). What is this distance? What if the latitude is 50degree south? This problem is a serious issue in long-range gunnery: In a battle near the Falkland Islands in World War I, the British navy consistently missed German ships by many tens of yards because they apparently forgot that the Coriolis effect in the southern hemisphere is opposite to that in the north. In Section 9.8, we use a method of successive approximation to find the orbit of an object that is dropped from rest, correct to first order in the earth's angular velocity ohm. Show in the same way that if an object is thrown with initial velocity v0 from a point O on the earth's surface at colatitude theta, then to first order in ohm its orbit is (First solve the equation of motion(9.53) in zeroth) order. that is ignoring ohm entirely. Substitute your zeroth-order solution for and into the right side of equation (9.53) and integrate to give the next approximation. Assume that v0 is small enough that air resistance and that g is a constant throughout the flight) Use the result (9.73) of Problem 9.26 io do the following: A naval gun shoots a shell at colatitude theta in a direction that is a above the horizontal and due east, with muzzle speed v0. Ignoring the earth's rotation (and air resistance), find how long (l) the shell would be in the air and how far away (R) it would land. If v0 = 500 m/s and alpha = 20degree, what are t and R? A naval gunner sports an enemy ship due east at the range R of part (a) and, forgetting about the Coriolis effect, aims his gun exactly as in part (a). Find by how far north or south, and in which direction, the shell will miss the target, in terms of ohm, v0, alpha, theta, and g. (It will also miss in the east-west direction but this is perhaps less critical.) If the incident occurs at latitude 50degree north (theta = 40degree). What is this distance? What if the latitude is 50degree south? This problem is a serious issue in long-range gunnery: In a battle near the Falkland Islands in World War I, the British navy consistently missed German ships by many tens of yards because they apparently forgot that the Coriolis effect in the southern hemisphere is opposite to that in the north.

Question 4. You are driving your car at 45 mph. Your car has mass1435kg. You run into a car that has mass 1084kg and is going 55 mphin the opposite direction. The two cars lock bumpers, so they movetogether. No one hits the brakes. How fast will the cars move afterthe collision? Give your answer in mph to two decimal places.

Correct answer: 1.97

Question 5 (1 point)
If your distance from the center of a planet becomes 0.81 timeswhat it was before, what happens to your weight? Give the answer interms of the number by which you would multiply your originalweight. Express your answer in scientific notation, to threesignificant figures. E.g. if you move to 3.4 times as far from thecenter of the planet as you were before, your weight would bemultiplied by (1/3.4 squared) = 0.08650519=8.65E-2. This answer hasNO units

Correct answer: 1.52E0 (1.52 * 100)

Question 6 (1 point)
If you weigh 232.12 lb on the Earth, what do you weigh at the topof a tower (on Earth) where the tower is 0.22 Earth radii tall.Give your answer in pounds to two decimal places.

Correct answer: 155.95

Question 7 (1 point)
If you weigh 96.6 lb on the Earth. Then the Earth collapses. Thereis no change of Earth's total mass, and the surface just contracts,but the radius decreases to 0.15 times what it was formally? Whatdo you weigh after the expansion. Tell the number of pounds to twodecimal places.

Correct answer: 4293.33

Question 8 (1 point)
If you weigh 142.2 lb on the Earth, what do you weigh on adifferent planet where the planet has mass 1.0 times as much asEarth's and radius 0.5 times as large as Earth's. Give your answerin pounds to two decimal places.

Correct answer: 568.80

Question 9 (1 point)
What is the smallest velocity that will enable you to escape fromthe Earth if you are 2.66 Earth radii from the center of the Earth?Give your answer in scientific notation to three significantfigures. Remember that the Earth orbits the Sun at 30 km/sec andthat satellites at about 1 Earth radius from the center go 7.8km/sec.

Correct answer: 6.76E0 (6.76 * 100)

Question 10 (1 point)
You hit the 8 ball and it moves East at 3.8 cm/sec. It hits the 3ball. After the collision, the 8 ball continues to move, but withspeed 2.3 in the East direction. How fast does the 3 ball move?Tell the answer to one decimal place and follow it by the directionthat it moves.

Correct answer: 1.5

Question 11 (1 point)
A rocket has 556 kg of fuel and 142 kg of solid parts. The fuelexits the rocket at a speed of 4504 meters/second. If the fuelcomes out all at one moment, how fast will the rocket be goingafter the fuel leaves? Assume that the rocket and the fuel were notmoving before the fuel left. Use the positive sign for thedirection that the fuel goes. Express your answer in scientificnotation to three significant figures.

Correct answer: -1.76E4 (-1.76 * 104)

Weekly leaderboard

Home

Homework Help 3,900,000

Physics 110,000

Unlock all answers

Related textbook solutions

Physics: Principles with Applications

Related questions

Weekly leaderboard