7. A train is traveling 22 degrees north northwest (i.e. 22 degrees west of due north) at a speed of 40 miles per hour. You are in the dining car and you walk across the car at an angle of 48 degrees from the side of the car towards southwest, and walking in the direction towards the front of the car) at a speed of 3 mph. Find the vector that represents your velocity relative to the ground. Give its direction and you speed. N
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- E Figure 7 52 Part A mylabmastering.pearson.com M X P B-A = 22.7 Submit M B (B=26.5) 56.0% Ĵ Ā (A = 44.0) 28.0° t C(C= 31.0) C Given the vectors A and B shown in the figure ((Figure 1)), determine the magnitude of B-A. Express your answer using three significant figures. IVD ΑΣΦ Previous Answers Request Answer NOV 10 U ? - X units ✓ 4 < + P Course... 1 of 1 CtvA ball is thrown from a high window. The arc path that it takes is a result of the combination of its horizontal and vertical motions. Which statement describes the acceleration of the ball? O The ball accelerates horizontally away from the building. The ball accelerates upward away from the ground. The ball does not accelerate. The ball accelerates vertically downward toward the ground.You want to swim straight across a river that is 76.0 m wide. You are able to do this if you swim at an angle of 28 degrees with respect to the "upstream" direction (A 0 degree angle would be in the direction of the water flow, 90 degrees would be straight across the river). You can swim at a speed of 1.50 m/s with respect to the water. a. What is the speed of the water with respect to the shore? b. How much time will it take for you to swim to shore?
- A secret agent skis off a slope inclined at θ = 28.3 degrees below horizontal at a speed of v0 = 17.4 m/s. He must clear a gorge, and the slope on the other side of the gorge is h = 11.9 m below the edge of the upper slope. a.)What is the maximum width, w, of the gorge (in meters) so that the agent clears it?Sheena can row a boat at 3.20 mi/h in still water. She needs to cross a river that is 1.20 mi wide with a current flowing at 1.80 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head upstream at an angle of 25.0° from the direction straight across the river. a.)What is her speed with respect to the starting point on the bank? b.)How long does it take her to cross the river?b) I(1, 0, 0), J(0, 1, 0), and K(0, 0, 1) 6, A helicopter takes off at a ground velocity of 150 km/h. It climbs at an angle of 48° toward the east. A 17-km/h wind is blowing from the south. Determine the resultant air and ground velocities. Include a diagram in your solution. The Eiffel Tower is 324 m tall. Denise is
- A boat heads in the direction N72° E. The speed of the boat relative to the water is 24 mph. The water is flowing directly south. It is observed that the true direction of the boat is directly east. A) Express the velocity of the boat relative to the water as a vector in component form. B) Find the true speed of the water. C) Find the true speed of the boat.c) The geodesics of the sphere are great circles. Thinking of θ = 0 as the North pole and θ = π as the South pole, find a set a solutions to the geodesic equation corresponding to meridians, andalso the solution corresponding to the equator.A river flows due south with a speed of 2.0 m/s. You steer a motorboat across the river; your velocity relative to the water is 5.2 m/s due east. The river is 650 m wide. Part A What is the magnitude of your velocity relative to the earth? Express your answer with the appropriate units. ANSWER: V = Part B What is the direction of your velocity relative to the earth? Express your answer in degrees. ANSWER: south of east Part C How much time is required to cross the river? Express your answer with the appropriate units. ANSWER: t = Part D How far south of your starting point will you reach the opposite bank? Express your answer with the appropriate units. ANSWER: L =
- ▾ Part A You want to cross a ver that is 30 mn wide and flows to the East at 15 m/s You'r at a spoed of 5.0 m/s (relative to the water). If you start from the South side of the viver and want to go ataight acres of what angle should you pare yourself? Express your answer in degrees. Enter a positive value if you should point yourself to the West of North, and a negative value if you should point yourself the East of North VALO 4 tomt Best A 0 ?Please provide the correct answerQ/ A particle moves in an xy plane according to x(1)= -20.00 + 20.00t - 4.00 and y(t) = 25.00 + 17.00t -19.00², with x and y in meters and t in seconds. At t= 10 s, a. What is the particle velocity vector vì nunit vector notation? b. What is the particle acceleration vector đìn unit vector notation?