A boat is traveling upstream in the positive direction of the x axis at 10 km/h

Question

A boat is traveling upstream in the positive direction of thex axis at 10 km/h withrespect to the water of a river. The water is flowing at6 km/h with respect to the ground. (a) What is the velocity of the boat withrespect to the ground?
1 km/h

(b) A child on the boat walks from front to rear at 7 km/h with respect to the boat. What is thechild's velocity with respect to the ground?
2 km/h (a) What is the velocity of the boat withrespect to the ground?
1 km/h

(b) A child on the boat walks from front to rear at 7 km/h with respect to the boat. What is thechild's velocity with respect to the ground?
2 km/h

Explanation / Answer

a) v = 10km/h - 6km/h = 4km/h it is 4km/h respect to ground b) since the child walk from the front to the rear, its speedrelative to the baot is -7km/h the speed relative to the ground is: u = -7km/h + 4km/h = -3km/h its is -3km/h to the ground the negative sign meansdownstream.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.