Question #6417117Single Choice

Physics

Question

A boat crosses a river with a speed of 3 m/s perpendicular to the riverbank, while the current flows at a speed of 4 m/s. The width of the river is 60 m. What is the magnitude of  the displacement of the boat relative to its starting point when it reaches the opposite bank?

Options

A
    60 m
B
    80 m
C
    100 m
D
    120 m

Answer & Analysis