A crate on a nearly frictionless horizontal floor is pulled to the right by a rope…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

15\,\text{kg}

crate on a nearly frictionless horizontal floor is pulled to the right by a rope with a force of

50\,\text{N}

while another worker pushes to the left with

20\,\text{N}

. Taking the rightward direction as positive, what is the crate’s acceleration? (a)

+3.3\,\text{m/s}^{2}

(b)

+2.0\,\text{m/s}^{2}

(c)

-2.0\,\text{m/s}^{2}

(d)

+1.3\,\text{m/s}^{2}