Post a New Question

physics

posted by .

a motorboat is driven across a river at 5km/h at right angles to a current flowing at 3.9km/h. What is the resulting speed of the motorboat?

  • physics -

    When you add the two perpendicular vectors, the resultant vector will be the hypotenuse.

    sqrt[(5^2) + (3.9)^2] = ___

  • physics -

    6.34km/h

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    A river flows at the rate of 2 mph. If a motorboat can travel 12 miles upstream and return in a total of 2.5 hours, what is the speed of the motorboat in still water?
  2. Vectors

    a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10 km/h in still water and heads out from one bank. a marina is directly across the river, on the opposite bank. if the motorboat heads directly toward the marina, …
  3. vectors components

    plz answer my question a river is 2 km wide and flows at 4km/h. a motorboat has a speed of 10 km/h in still water and heads out from one bank. a marina is directly across the river, on the opposite bank. if the motorboat heads directly …
  4. physics

    a motorboat is heading across a river at 6km/h in a direction making an angle 60 degree to the current. current is moving boat downstream at 3 km/h. what is the resultant velocity?
  5. calculus

    Nikki is driving a motorboat across a river that flows at 5 m/s. The motorboat has a speed of 12 m/s in still water. She heads out from one bank in a direction perpendicular to the current. How far does she travel in 3 minutes?
  6. precal

    a man is driving his motor boat at 12 mph travelling N 30 E. The river currents are flowing due East at 8 mph. (A) express the true velocity of the motorboat as a vector. (B) what is the true speed of the motorboat?
  7. precal

    a man is driving his motor boat at 12 mph travelling N 30 E. The river currents are flowing due East at 8 mph. (A) express the true velocity of the motorboat as a vector. (B) what is the true speed of the motorboat?
  8. Algebra

    A motorboat that travels with a speed of 20 km/hour in still water has traveled 36 km against the current and 22 km with the current, having spent 3 hours on the entire trip. Find the speed of the current of the river.
  9. Algebra

    A tourist traveled on a motorboat against the current for 25 km. And then returned back on a raft. In the boat the tourist traveled for 10 hours less than on the raft. Find the speed of the current if the speed of the motorboat in …
  10. physics

    Suppose a river flows due south with a speed of 2.0 m/s. Given that speed of motorboat relative to water is 4.2 m/s due east. (a) In what direction should the motorboat head to reach a point on the opposite bank directly east from …

More Similar Questions

Post a New Question