Physics

Problem

A block is projected up a smooth incline with an initial speed of

10\,\text{m/s}

. It comes momentarily to rest after

2.0\,\text{s}

. Take

g = 9.8\,\text{m/s}^2

. The angle of inclination of the plane is nearly a)

60^\circ

45^\circ

30^\circ

15^\circ