A boat is traveling upstream in the positive direction of an x axis at 12 0 km/h

Question

A boat is traveling upstream in the positive direction of an x axis at 12 0 km/h with respect to the water of a river. The water Is flowing at 7.05 km/h with respect to the ground. What is the magnitude of the boat's velocity with respect to the ground' What is the direction of the boat's velocity with respect to the ground? A child on the boat walks from front to rear at 6.09 km/h with respect to the boat. What is the magnitude of the child's velocity with respect to the ground' What is the direction of the child's velocity with respect to the ground'

Explanation / Answer

Multiple questions allowed to solve only 1 question at a time according to the chegg guidelines.

that 's simple

we use the formula

v (boat wrt river) + v (river wrt ground) = v (boat wrt ground)

v (boat wrt ground) = 12 kmph - 7.05 kmph = 4.95 km/h upstream ========ANSWER)

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