Could you help me solve this physics problem? please have the writing neatly, or

Question

Could you help me solve this physics problem?

please have the writing neatly, or typed, thank you by a lot!!!!!

You know that your usual rowing speed is 8.7 x 102 meters per minute that is, your speed with respect to the water. Today, you decide to row across a 1.00 km wide river that has straight, parallel banks and a uniform current (flowing parallel to its banks). You point your boat straight across (perpendicular to the current) and you reach the other bank 2.1 × 102 meters downstream of where you started. What is the velocity of the current? How long did it take you to get across?

Explanation / Answer

rowing speed is all the time to cross the width.

t = d / v = (1 x 10^3 m) / (8.7 x 10^2 m/ 60 s )

t = 68.97 sec

along the stream,

v_stream t = 2.1 x 10^2

v ( 68.97) = 210

v = 3.04 m/s .........Ans (Velociy of current)

t = 69 sec ......Ans

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