In order to go from her office to her favorite pizzeria for lunch, woman walks due east (polar angle of 0°) at an average speed of 3.2 m/s for 5 minutes and then walks due north (polar angle of 90 degrees ) for 4 minutes at average speed of 2.7 m/s . (c) what is the average velocity for her trip? (magnitude & direction) (d) if the woman has one hour for lunch and she gets back from the pizzeria just in time, what was the average velocity for her entire lunch trip?

Q: A squirrel has x- and y- coordinates (-2.0m, 4.2 m) at time t = 0 and coordinates (4.4 m, -1.8 m) at…

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Q: A squirrel has x- and y- coordinates (-2.0 m, 4.2 m) at time t = 0 and coordinates (4.4 m, -1.8 m)…

A: Given Coordinates at t=0 sec are (-2.0 m, 4.2 m) Coordinates at t=4 sec are (4.4 m, -1.8 m)

Q: An object undergoes acceleration when it changes    what  is the asnwer?   a) speed only   b)…

A: Answer:- (c) both speed and direction  An object undergoes acceleration when it changes both speed…

Q: A river has a constant current of 3 kilometers per hour. At what angle to a boat dock should a…

A: Current speed, v1 = 3 km/hr Speed of the boat, v2 = 25 km/hr Let v be the resultant speed of the…

Q: If a rock was thrown with an initial velocity of 10 m/s in the x-direction at an angle of 40…

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Q: A ball is kicked with an initial speed of 14 m/s and reaches a maximum height of 8.2 m above the…

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Q: For the winter, a duck flies 10 m/s due south against a gust of wind with a velocity of 2.5 m/s.…

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Q: .Why is the average speed of a horizontal line always zero?

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Q: A ball is tossed with a velocity of 10 m/s directed vertically upward from a window located 20 m…

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Q: Car A is travelling on a north-bound lane of a two-lane straight highway with an initial velocity of…

A: Given:- Car A is traveling on a northbound lane of a two-lane straight highway with an initial…

Q: unner A is initially 1.0 mi west of a flagpole and is running with a constant velocity of 3.0 mi/h…

A: The position of runner A from flagpole is 0.668 mi. in east direction.

Q: Which of the following statements INCORRECTLY describes the horizontal motion of a projectile? O The…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Consider a truck that travels between Houston and Dallas. Which of the following statements is not…

A: Average speed = Total distanceTotal time Average speed is total distance traveled over total time…

Q: A celebrated Mark Twain story has motivated contestants in the Calaveras County Jumping Frog…

A: Projectile motion is the motion in which a body is thrown at specific angle and it will subject to…

Q: A classic physics problem states that if a projectile is shot vertically up into the air with an…

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Q: A football is kicked 51.1 meters. If the ball is in the air 5.14 s, with what initial velocity was…

A: The horizontal range covered by the football is R=51.1 m The time of flight of the football is…

Q: items 5 - 6, refer to the situation: A biker rides north for 15 km from his starting position, then…

A: Given data: Biker rides 15 km, towards North Then 16 km, towards West Required: Magnitude and…

Q: A person going for a walk follows the path shown in the figure, where y, magnitude 328 m and e =…

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Q: In one battle, a cannon is fired at an elevation angle of 53° with an initial velocity of 60 m/s.…

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Q: Djectle is shot vertically upward with a given initial velocity. It reaches a maximum height of 100…

A: Suppose that, in the first case, initial velocity is u and in the second case initial velocity is…

Q: A projectile is shot vertically upward with a given initial velocity, It reaches a maximum height of…

A: Given : Maximum height (hmax) = 100 m

Q: Which of the following statement is/are true? (A) The acceleration in free fall at the maximum…

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Q: Which of the following statements is true for a projectile launched vertically downward? a. Its…

A: Given : Projectile is launched vertically downward.  Since it is launched vertically downward, thus…

Q: If a rock is thrown with an initial velocity of 5.4 m/s in th y-direction and 8.2 m/s in the…

A: velocity in x direction=VX=8.2 m/s velocity in y direction=Vy=5.4 m/s let θ be angle at which rock…

Q: If a rock is thrown with an initial velocity of 5.4 m/s in the y-direction and 8.2 m/s in the…

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Q: dancing policeman performs a stunt by tossing his cap vertically upward with an initial speed of 10…

A: Given  Vi = 10 m/s  Acceleration due to gravity  a = g = 9.80 m/s2 in downward direction .   At…

Q: A fish swimming in a horizontal plane has velocity i = (4.00 î + 1.00 ĵ) m/s at a point in the ocean…

A: Acceleration of the fish is v=u+ata=v-ut=21i^-6j^m/s-4i^+1j^m/s15 s=17i^-7j^m/s15…

Q: A ball is tossed with a velocity of 10 m/s directed vertically upward from a window located 20 m…

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Q: Chapter 4- questn-21 A stone is thrown horizontally from the top of a cliff of height h toward the…

A: stone is thrown horizontally from the top of cliff of height towards the ocean below.stone strikes…

Q: Runner A is initially 8.0 mi west of a flagpole and is running with a constant velocity of 5.0 mi/h…

A: Given: The distance of the runner A from the flagpole is 8.0 mi west            The velocity of…

Q: The position of a cat running from a dog down a dark alley is given by the values of the table. ?t…

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Q: The best leaper in the animal kingdom is the puma, which can jump to a height of 12.7 ft when…

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Q: The maximum height above ground you can achieve with a projectile launched vertically upward from…

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Q: "Jojo is riding a boat to travel across a river whose current has velocity of 1.20 m/s westward. If…

A: Given data: Velocity of the river (vr) = 1.20 m/s, westward Velocity of the boat (vb) = 1.85 m/s

Q: The position of a squirrel running in a park is given by r⃗ =[(0.280m/s)t+(0.0360m/s2)t2]i^+…

A: The position of the squirrel is given by

Q: The height (in meters) of a projectile shot vertically upward from a point 4 m above ground level…

A: PROJECTILE MOTION: An object is projected or flung into the air, and only the acceleration of…

Q: A ball is equipped with a speedometer and launched straight upward. The speedometer reading three…

A: Given: Speed of the ball at time t = 3 sec is u = 30 m/s So the height of the ball at time t = 3sec…

Q: In projectile motion, the total flight time is _______.   A) equal to the time required to…

A: Explanation: The time of flight in a projectile motion depends upon the initial velocity of the…

Q: In reaching her destination, a backpacker walks with an average velocity of 1.17 m/s, due west. This…

A: The backpacker travels 6.57 km due west with an average velocity of 3 m/s. Time taken t1 is,

Q: A hot-air balloon is rising upward with a constant speed of 3.76 m/s. When the balloon is 2.06 m…

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Q: A hot-air balloon is rising upward with a constant speed of 2.14 m/s. When the balloon is 2.98 m…

A: Let t be the time, vo be the initial velocity, g is the acceleration due to gravity and s is the…

Q: A hot-air balloon is rising upward with a constant speed of 2.55 m/s. When the balloon is 2.91 m…

A: consider motion parameters to be positive in downward direction and negative in upward direction…

Q: Runner A is initially 9.0 mi west of a flagpole and is running with a constant velocity of 2.0 mi/h…

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Q: An airplane heads due south at 140 m/s through a 20 m/s cross wind blowing from west to east. The…

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Q: The speed of a cyclist along the horizontal road is 16 km/h, 12 km/h upward and 24 km/h downward.…

A: Given data: The speed of a cyclist along the horizontal road is V1=16 km/h. The speed of a cyclist…

Q: In reaching her destination, a backpacker walks with an average velocity of 1.30 m/s, due west. This…

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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.