A box is sliding on a horizontal surface for which the coefficient of kinetic friction is

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

Problem

20\,\text{kg}

box is sliding on a horizontal surface for which the coefficient of kinetic friction is

\mu_k = 0.30

. It is being pushed by a constant force of

150\,\text{N}

acting at

20^{\circ}

below the horizontal. Determine the acceleration of the box at that instant.