If a force $\vec F = 4\hat i + 5\hat j$ causes a displacement $\vec s = 3\hat i + 6\hat k$, work done is
If a force $\vec F = 4\hat i + 5\hat j$ causes a displacement $\vec s = 3\hat i + 6\hat k$, work done is
$4 \times 6$ unit
$6 \times 3$unit
$5 \times 6$unit
$4 \times 3$unit
If a force $\vec F = 4\hat i + 5\hat j$ causes a displacement $\vec s = 3\hat i + 6\hat k$, work done is
$W = \overrightarrow F .\overrightarrow s = (4\hat i + 5\hat j + 0\hat k).(3\hat i + 0\hat j + 6\hat k)$ $ = 4 \times 3$ units