a boat moves with a velocity of 15m/s N in a river which flows with a velocity of 8.0m/s W. Calculate the boat's resultant velocity with respect to due north.
4 answers
Need direction of flow of river.
it is going west
1. Earth's first atmosphere was composed of mainly which of the following gases?
A. hydrogen and helium
B. carbon dioxide and oxygen
C. nitrogen and oxygen
D. carbon monoxide and o zone
2. During the Cambrian explosion that began the Paleozoic era, the many new forms of life that evolved
A. lived on land
B. were invertebrates that lived in the sea
C. were vertebrates covered with scales or fur
D. were single celled
3. which of the following occurred during the Mesozoic era?
A. the rise of reptiles
B. the rise of plants
C. the rise of invertebrates
D. the rise of mammals
A. hydrogen and helium
B. carbon dioxide and oxygen
C. nitrogen and oxygen
D. carbon monoxide and o zone
2. During the Cambrian explosion that began the Paleozoic era, the many new forms of life that evolved
A. lived on land
B. were invertebrates that lived in the sea
C. were vertebrates covered with scales or fur
D. were single celled
3. which of the following occurred during the Mesozoic era?
A. the rise of reptiles
B. the rise of plants
C. the rise of invertebrates
D. the rise of mammals
vector addition ... v^2 = 15^2 + 8.0^2 ... two significant figures
angle (west of north) ... tan(Θ) = 8 / 15
angle (west of north) ... tan(Θ) = 8 / 15
2 answers