Posted by Jake on Tuesday, March 20, 2012 at 3:52am.
Bob can swim at a rate of 5km/h. He is in a river that is flowing at a rate of 9 km/h.
a) if bob swims upstream, what is his relative velocity to the ground?
b)if bob swims downstream, what is his relative velocity to the ground?
c) Someone decides to help Bob out of the water with a rope. bob swims across the river (perpendicular to the flow of water) in the same direction he's being pulled. The rescuer is pulling at a rate of 3 km/h. What is Bob's relative velocity to the ground?

Calculus and vectors  bobpursley, Tuesday, March 20, 2012 at 8:20am
a. what is 95?
b. what is 9+5?
c. draw the figure.
the perpendicular across is 5km/hr
the downstream is 9km/hr
Hmmmm. How can he swim in the same direction he is being pulled, if he is swimming at 5km/hr and the rope is pulling slower? So, I don't understand the situation. Maybe he is no longer swimming, but being pulled, but the problem says..bob swims ...
Answer This Question
Related Questions
 physics  Bob can swim at a rate of 5km/h. He is in a river that is flowing at a...
 Math  Bob can swim at a rate of 5km/h. He is in a river that is flowing at a ...
 physics  You want to swim straight across a river that is 76m wide. You find ...
 Physics  Bob starts spinning his hammer at a rate of 2.00 rad/s^2. At the same ...
 Physics based Calculus  Bob has just finished climbing a sheer cliff above a ...
 math  A girl swims across a river. When she swims in still water, she swims at ...
 Mechanics M1  A girl swims across a river. When she swims in still water, she ...
 HIT  Dr. Bob's computerized records have been compromised by a hacker, ...
 confidentiality of health information  Dr. Bob's computerized records have been...
 Confidentiality of health information  Dr. Bob's computerized records have been...
More Related Questions