<p>A body is projected from the ground at an angle of <span class="equation">\(45^0\)</span>with the horizontal. Its velocity after 2s is 20 <span class="equation">\(ms^1\)</span>. The maximum height reached by the body during its motion is __________ m. (use g = 10&nbsp;<span class="equation">\(ms^{-2}\)</span>)​​​​​​​</p>