Relative velocity Definition and 407 Threads

  1. M

    Relative Velocity while swimming

    Hey I need a little help with this (B) question: Find: (I) P and Q (II)How long will it take her to swim in a straight line back to the original starting point. Ive done some of the basics here, which i know to be right, including the answers to part 1 - when i tried to bring it further...
  2. M

    What Are the Two Possible Wind Velocities in This Relative Velocity Problem?

    Id be very grateful for any help with this relative velocity question: To a man walking North at 4m/s, a constant wind appears to have a speed f 3m/s. The man then changes direction, and when he is walking West at 3m/s the wind appears to have a speed of 4 m/s. There are two possible wind...
  3. N

    How Long to Overtake Another Car at Different Speeds?

    How long does it take an automobile traveling in the left lane at 60.0 km/hr to pull along side a car traveling in the right lane at 40.0 km/hr if the cars' front bumpers are initially 100 m apart? I know the velocity of the car in the left is 60 and the velocity of the car on the right is...
  4. P

    Explain in relative velocity please?

    Can someone please explain in relative velocity please?
  5. T

    How Far Downstream Will the Swimmer End Up?

    river current = 22 m/s [South] width of the river from one side to the other = 325m speed of person swiming = 47 m/s if the person travels 47 m/s [E 7.5 degrees S] then how far up or down the stream will he end up when he reaches the other side?
  6. D

    Need help with 3d relative velocity h/w problem

    Here the question, A swimmer wants to cross a river, from point A to point B. The distance d_1 (from A to C) is 200 m, the distance d_2 (from C to B) is 150 m, and the speed v_r of the current in the river is 5 km/h. Suppose that the swimmer makes an angle of theta=45 deg. (0.785 radians)...
  7. S

    Calculating Position and Average Velocity of a Plane with Relative Motion

    A small air plane is traveling at a velocity relative to the air of 100km/h [E]. A wind from the north is blowing at 20km/h. (a) Determine the position of the airplane after 2.5 h of this motion. (b) Find the average velocity of the airplave during the 2.5 h interval. Thanks a Lot...
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