You go watch your friend as she runs at a cross country meet. The first time she passes you, your friend runs by going due north at a speed of 4.40 m/s. You move to a different place on the course and twelve minutes after you saw her the first time, your friend runs past you again. This time she is traveling at a speed of 3.80 m/s in the direction 30.0◦ W of S. What is the direction of her average acceleration between those same two times

Q: 2. A person leaving home travels 15 m [E], then 21m [N], and finally 8.0 m [W]. What was the…

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Q: Two ships leave port at the same time, one ship A sailing in the direction N20degreesW at a speed of…

A:

Q: You are in a hot-air balloon and descending toward the ground at 20.0m/s. You toss a stone…

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Q: A plane and submarine are both travelling at Mach 2. Which of the following statements are true?…

A: Mach number for plane = 2 Mach number for submarine = 2

Q: A boy standing at the edge of a 5.0-m-high balcony, throws a rock vertically straight up in the air…

A: Given data:  Initial speed = 15 m/s, vertical up Height (h) = 5.0 m g = 9.8 m/s2 Required: The speed…

Q: truck travels from point M northward for 30 min. then eastward for one hour, then shifted N 30° W.…

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Q: A bullet moving at a speed of 158 m/s passes through a plank of wood at 141 m/s.  Another bullet…

A: Given that - Initial velocity of the first bullet Final velocity of the first bullet Initial…

Q: A space vehicle is coasting at a constant velocity of 19.1 m/s in the +y direction relative to a…

A: Given:Velocity in y-direction, vy = 19.1 m/sAcceleration in x- direction, ax = 0.282 m/s2Initial…

Q: Yelena, Natasha, and the "Red Guardian" are looking for Melina's house. They walk 6.0 km [N], then…

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Q: In a relay, a runner catches a baton at a running speed of 2 m/s and accelerates to 1.5 m/s2…

A: The given data are: u=2 m/sa=1.5 m/s2t=3 s Here, u denotes the initial speed, a denotes the…

Q: What is the final position of a bus that travels a distance of 20 km from its origin going 25 N of…

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Q: In 1987, as a Halloween stunt, two sky divers passed a pumpkin back and forth between them while…

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Q: A bird flies at 8.00 km/hr @20o N of W relative to the wind. The wind blows 5.00 km/hr @70o S of E…

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Q: A person starts from his home and walks the following distances: i) 1500 yards, 50° N of Eii) 1800…

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Q: A ship is spotted from two lighthouses, A and B at 1 P.M. From lighthouse A, which is 39.2 km due…

A: Ship is spotted from light house A and B

Q: A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed…

A: Given,Initial speed of the stone, vo= 18.5 msheight of the cliff, h = 49.0 m

Q: A hockey puck travels with a displacement of 4.2 m [S 38° W]. It is then struck by a player’s stick…

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Q: A biker travelled 270.0 meters 42° N of E to point A, then 80.0 meters west to point B, and finally,…

A: As per given data we have the diagram as shown below.

Q: In the World Pond Hockey tournament held in Plaster Rock, NB, a puck on the ice travels 20.0 m [25°…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: A 5kg ball is thrown straight into the air at 5 m/s. How high does it travel?

A: Given data :                  Mass of the ball, m = 5 kg                  Initial speed of the ball…

Q: A (field) hockey player is running north at a speed of 8 m⋅s−1. A ball is coming directly towards…

A: Given data: - The speed of the hockey player is running north is vh = 8 m⋅s−1. The speed of the…

Q: student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of…

A: Given : v0 = 18.5 m/s h = yo = 20.0 m

Q: Marie is jogging on the deck of a large cruise ship. From the ship's reference frame, Marie is…

A: Given Data : The velocity of Marie in the ship's frame of reference is given as vm=2.68 ms The…

Q: 1. After an airplane takes off, it travels 10.4km 15° N of W, 8.7km 60° E of S, 13.2km S What is the…

A: The detailed solution of question number 1 is given below. For more doubts please initiate a new…

Q: Sofia is playing a game with her friend, Kara, where she throwsM&M candies at Kara and Kara catches…

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Q: A bus is moving at 10 m/s. If you walk at 1 m/s down the aisle opposite the direction the bus is…

A: Speed of bus (v) = 10 m/s Speed of person (v') = 1 m/s down the aisle opposite to the direction of…

Q: A man flies a small airplane from Fargo to Bismarck, North Dakota a distance of 180 miles. Because…

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Q: 2. In the same tournament, a player is positioned 35 m [40° W of S] of the net. He shoots the puck…

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Q: A plane is initially traveling at a speed of 219 km/hr in the direction 38.4° north of west. Three…

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Q: car travels from 32 km [W] of a railroad to 27 km [E] in 1.8 h. What is the velocity of the car?

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Q: Two bicyclists, starting at the same place, are riding toward the same campground by different…

A: Given that distance in each direction. Then We have to determine the value of given parts.

Q: plane travels N 30o W at an air speed of 600 kph. If the wind has a speed of 80 kph on a direction…

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Q: Vtot = VA + VB y VB Vtot 23.0 26.5° VA

A:

Q: At an airport, Anna is stationary, Bert is walking at a speed of 1.0 m/s, Carla is standing while…

A: 1. As Anna is stationary at an airport therefore Anna's velocity relative to ground or earth is 0…

Q: A space vehicle is coasting at a constant velocity of 20.5 m/s in the +y direction relative to a…

A:

Q: In what direction should an airplane fly in order to fly due north at 320 kph if the wind is blowing…

A: By relative motion Vpa = Vp - Va = 320j -50i  Angle = tan-1(50/320)  = 8°53'  N 8°53' w

Q: A ferry is crossing a river. If the ferry is headed SE with a speed of 3.50 m/s relative to the…

A: velocity of boat relative to water = 3.5 m/s SE velocity of water with respect to ground = 6.4 m/s…

Q: A ship is sailing north at speed 10m/s. A submarine detects the ship when 2 km due East of the ship…

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Q: truck travels from M northward for 30 min, then eastward for one hour, then shifted N 30 W. If the…

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Q: A ship sets sail from Rotterdam, The Netherlands, heading due north at 8.00 m/s relative to the…

A:

Q: 1) A man flies a small airplane from Fargo to Bismarck, North Dakota—a distance of 180 mi. Because…

A: Ans:- Image-1

Q: A ferry is crossing a river. If the ferry is headed SE with a speed of 3.50 m/s relative to the…

A: To determine: The velocity of boat relative to the observer on the river bank   Given: Speed of the…

Q: An airplane left an airport and flew 105 mi in the direction of N 50.4000 deg E, then turned and…

A: Given: The first displacement is 105 mi. The direction is 50.4 degrees East. The second displacement…

Q: While taking a bath, Ayie bumped the shower rack and her scented candle flew across the bathroom.…

A:

Q: A ship sets sail from Rotterdam, The Netherlands, heading due north at 7.00 m/s relative to the…

A: Ship is heading in north direction and local current is in north-east direction at the given angle.…

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.