Science

You are in a speedboat on a river moving in the same direction as the current. The speedometer on the boat shows that its speed is 50 km/h. However, a person on the shore meansures the boat's speed as 57 km/h. How is this possible?
The answer is somehow related to the speed of the current but i am confused.

  1. 👍
  2. 👎
  3. 👁
  1. Thank you for using the Jiskha Homework Help Forum. The speed of the current must be faster than the boat's speed. How was the measurement being taken = could it be the speed of the current?

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. phys science

    1. speed is the ratio of the distance an object moves to a. the amount of time needed to travel the distance** b. the direction the object moves c. the displacement of an object d. the motion of the object 2. a car traveled 60 km

  2. Physics

    A speedboat moves on a lake with initial velocity vector v1,x = 8.57 m/s and v1,y = -2.61 m/s, then accelerates for 6.67 seconds at an average acceleration of aav,x = -0.105 m/s2 and aav,y = 0.101 m/s2. What are the components of

  3. science

    a 10000 kg truck moving at 10 m/s collides with a 2000 kg car moving at 30 m/s in the opposite direction. If they stick together after impact how fast, and in what direction, will they be moving?

  4. maths

    a yacht is moving at 10km/h in a south easterly direction and encounters a 3km/h current from the north. find the actual speed and direction of the yacht

  1. Algebra 2

    The excursion boat on the river takes 2½ hours to make the trip to a point 12 miles upstream and to return. If the rate at which the boat travels in still water is 5 times the rate of the river current, what is the rate of the

  2. statics

    Suppose that you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 m/s . The river has a current that runs at a speed of 1.00 m/s. If you are swimming upstream (i.e., against

  3. Science

    Which option most accurately describes alternating current? current that moves in one direction throughout a circuit current that moves in one direction until it reaches the battery, then moves in the other direction current that

  4. Science

    If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current? A. counterclockwise B. clockwise C. in the same direction as the current D. in the opposite direction to the current

  1. physics - relative motion

    A ferryboat, whose speed in still water is 4.00m/s, must cross a river whose current is 3.00m/s. The river runs from west to east and is 128m wide. The boat is pointed north. a) If the boat does not compensate for the flow of the

  2. Physic please check

    A +6.00 µC charge is moving with a speed of 7.00 x 10^4 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 63.0 A in a direction opposite to that of the moving charge. Find

  3. Physics

    Two objects with masses represented by m1 and m2 are moving such that their combined total momentum has a magnitude of 16.3 kg · m/s and points in a direction 71.5° above the positive x-axis. Object m1 is moving in the x

  4. Physics

    A swimmer heads directly across a river, swimming at 1.10 m/s relative to the water. She arrives at a point 60.0 m downstream from the point directly across the river, 80.0 m wide. What is the speed of the river current? What is

You can view more similar questions or ask a new question.