A object initially at rest is pulled along a horizontal friction-free surface by a…

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

Problem

2.0\,\text{kg}

object initially at rest is pulled along a horizontal friction-free surface by a constant horizontal force of

10\,\text{N}

for

4.0\,\text{m}

. What is the object’s speed after it has been displaced

4.0\,\text{m}

? (a)

9.0\,\text{m/s}

(b)

6.3\,\text{m/s}

(c)

4.5\,\text{m/s}

(d)

12.6\,\text{m/s}