Author Question: A boat moves at 10.8 m/s relative to the water. If the boat is in a river where the current is 2.00 ... (Read 395 times)

TFauchery · **on:** Jul 28, 2018

A boat moves at 10.8 m/s relative to the water. If the boat is in a river where the current is 2.00 m/s, how long does it take the boat to make a complete round trip of 1 100 m upstream followed by a 1 100-m trip downstream?
a. 250 s
b. 172 s
c. 211 s
d. 297 s
e. 336 s

Question 2

A jet airliner moving at 470 mph due east moves into a region where the wind is blowing at 110 mph in a direction 30.0 north of east. What is the new velocity and direction of the aircraft?
a. 568 mph, 5.56 N of E
b. 573 mph, 5.98 N of E
c. 520 mph, 9.06 N of E
d. 568 mph, 10.4 N of E
e. 448 mph, 9.45 N of E