A swimmer, capable of swimming at a speed of 0.8 m/s in still water (i.e., the swimmer can swimwith a speed of 0.8 m/s relative to thewater), starts to swim directly across a 3.0 km wide river. However, the current is 0.91 m/s,and it carries the swimmer downstream.
a) How long does it take the swimmer to cross the river?
b) How far downstream will the swimmer be upon reaching the otherside of the river?
A bullet is fired from a rifle that is held 2.3 m above the ground in a horizontal position. Theinitial speed of the bullet is 1110 m/s.
a) Find the time it takes for the bullet tostrike the ground.
b) Find the horizontal distance traveled by the bullet.