# Question

A 400.0-m-wide river flows from west to east at 30.0 m/min. Your boat moves at 100.0 m/min relative to the water no matter which direction you point it. To cross this river, you start from a dock at point A on the south bank. There is a boat landing directly opposite 8t point B on the north bank, and also one at point C, 75.0 m downstream from B (Fig. 3.53).

(a) Where on the north shore will you land if you point your boat perpendicular to the water current, and what distance will you have traveled?

(b) If you initially aim your boat directly toward point C and do not change that bearing relative to the shore, where on the north shore will you land?

(c) To reach point C: (i) at what bearing must you aim your boat, (ii) how long will it take to cross the river, (iii) what distance do you travel, and (iv) and what is the speed of your boat as measured by an observer standing on the river bank?

(a) Where on the north shore will you land if you point your boat perpendicular to the water current, and what distance will you have traveled?

(b) If you initially aim your boat directly toward point C and do not change that bearing relative to the shore, where on the north shore will you land?

(c) To reach point C: (i) at what bearing must you aim your boat, (ii) how long will it take to cross the river, (iii) what distance do you travel, and (iv) and what is the speed of your boat as measured by an observer standing on the river bank?

## Answer to relevant Questions

A particle moves in the xy-plane. Its coordinates are given as functions of time by x(t) = R (wt – sin wt) y(t) = R (1 – cos wt) where Rand", are constants. (a) Sketch the trajectory of the particle. (This is the ...An elevator is moving upward at a constant speed of 2.50 m/s. A bolt in the elevator ceiling 3.00 m above the elevator floor works loose and falls. (a) How long does it take for the bolt to fall to the elevator floor? What ...Projectile Motion on an inline I, a baseball is given an initial velocity with magnitude Vo at an angle Φ above the surface of an incline, which is in turn inclined at an angle e above the horizontal (Fig. 3.55) (a) ...A balloon initially contains 65 m3 of helium gas at atmospheric conditions of 100 kPa and 22°C. The balloon is connected by a valve to a large reservoir that supplies helium gas at 150 kPa and 25°C. Now the valve is ...A long roll of 1-m-wide and 0.5-cm-thick 1-Mn manganese steel plate (r = 7854 kg/m3) coming off a furnace is to be quenched in an oil bath to a specified temperature. If the metal sheet is moving at a steady velocity of 10 ...Post your question

0