Physics

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}

6.3\,\text{m/s}

4.5\,\text{m/s}

12.6\,\text{m/s}