Posted by **elana** on Sunday, October 3, 2010 at 6:33pm.

A stream is 30. meters wide and its current flows southward at 1.5 meters per second. A toy boat is launched with a velocity of 2.0 meters per second eastward from the west bank of the stream

a. what is the magnitude of the boat's resultant velocity as it crosses the stream?

b. how much time is required for the boat to reach the opposite bank of the stream?

- physics -
**Henry**, Sunday, October 3, 2010 at 9:43pm
a. X = Hor = 2 m/s

Y = Ver = 1.5 vm/s,

tanA = Y/X = 1.5/2 = 0.75,

A = 36.9 Deg.

R = X / cosA = 2/cos36.9 = 2.5 m/s

= Resulting velocity.

b. d = 30 m / cos36.9 = 37.5 M,

d = v * t,

37.5 = 2.5t,

t = 37.5 / 2.5 = 15 s.

## Answer This Question

## Related Questions

- 10th grade - A stream is 30. meters wide and its current flows southward at 1.5 ...
- Physics - a missile is launched off a jet fighter travelling 300 meters per ...
- Earth Science - 1A student measures the velocity of the water in a stream as 2.5...
- math - a launched rocket has an altitude, in meters, given by the polynimial h+...
- Algbrah - A launched rocket has an altitude in meters, given by the polynomial h...
- math-algebra - A launched rocket has an altitude, in meters, given by the ...
- math 117 - A launched rocket has an altitude in meters, given by the polynomial ...
- math 117 - A launched rocket has an altitude in meters, given by the polynomial ...
- math 116 - A launched rocket has an altitude in meters, given by the polynomial ...
- math 117 - A launched rocket has an altitude in meters, given by the polynomial ...

More Related Questions