Posted by Anonymous on Wednesday, November 21, 2012 at 9:21am.
at 10 mph, it is still going east at t=2
so, distance is increasing at 10 mph
at t=3, it turns south. After that, the distance d from P is
d^2 = 30^2 + (10(t-3))^2
2d dd/dt = 200(t-3)
at t=7, d=50
2*50 dd/dt = 200(4)
dd/dt = 8 mph
i'm still not understand for this conclution
*conclusion not conclution
where do you get 200(t-3)???
Related Questions
calculus - A boat sails 30 miles to the east from a point P, then it changes ...
calculus - A boat sails 30 miles to the east from a point P, then it changes ...
pre calc - Lighthouse B is 8 miles west of lighthouse A. A boat leaves A and ...
Physics - A current of a river flows steadily from west to east at 1.00 m/s. A ...
math - Howard leaves the dock and sails 2.5miles west He turns south and sails 3...
Physics - A boat is at a point 120km West and 60km South of its destination. It ...
physics - A boat sails 251 km to the East and then 534 km to the North. What is ...
Physics - The force exerted by the wind on the sails of a sailboat is 310 N ...
Physics - A sailboat is traveling east at 8.0 m/s. A sudden gust of wind gives ...
Physics - A boat is at a point 120km West and 60km South of its destination. It ...
For Further Reading
