Solve Applied Problems Involving Vectors
-A child throws a ball with a speed of 4 feet per second at an angle of $48 ^ { \circ }$ with the horizontal. Express the vector described in terms of $\mathbf { i }$ and $\mathbf { j }$. If exact values are not possible, round components to 3 decimals.
A) $2.677 \mathrm { i } + 2.973 \mathrm { j }$
B) $2.973 \mathrm { i } + 2.677 \mathrm { j }$
C) $- 2.677 \mathrm { i } + 2.973 \mathrm { j }$
D) $2.973 \mathrm { i } - 2.677 \mathrm { j }$

Question

Quizplus · Accepted Answer

The horizontal component is $4 \cos(48^\circ) \approx 2.677$ and the vertical component is $4 \sin(48^\circ) \approx 2.973$, so the vector is $2.677 \mathbf{i} + 2.973 \mathbf{j}$.

Solve Applied Problems Involving Vectors -A Child Throws a Ball 48∘48 ^ { \circ }48∘

Solve Applied Problems Involving Vectors
-A Child Throws a Ball $48 ^ { \circ }$