<p>A fireworks rocket is launched vertically (+y-direction) into the night sky w

Question

<p>A fireworks rocket is launched vertically (+y-direction) into the night sky with an initial speed of <span>45.1</span> m/s. The rocket coasts after being launched, then explodes and breaks into two pieces of equal mass <span>2.54</span> s later.</p>
<div class="indent">(a) If each piece follows a trajectory that is initially at <span>43.7</span><span>&#176;</span> to the vertical, what was their speed immediately after the explosion?<br />m/s<br /><br />(b) What is the velocity of the rocket's center of mass before and after the explosion?<br /><br />(c) What is the acceleration of the rocket's center of mass before and after the explosion?</div>

Explanation / Answer

the speed at explosion is vy=45.1-9.80 * 2 25.50 m/s A) The center of mass will have same speed before and after v=25.50 /cos(43.7) 35.2713 m/s B)and C) 25.50 m/s

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