At a particular instant

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

At a particular instant, a

0.75\,\text{kg}

quadcopter experiences three external forces:

12\,\text{N}

straight upward (thrust),

2.5\,\text{N}

directed

15^{\circ}

south of west (air drag), and its weight. Using east as the

+x

axis and north as the

+y

axis, determine the magnitude of the quadcopter’s acceleration and the angle of this acceleration measured counter-clockwise from the

+x

axis.